RRB Group D Coding – Decoding
Crack RRB Group D Coding-Decoding and Shapes Problems with Clock-Based Challenges. Enhance your reasoning skills for the railway recruitment exam with comprehensive solutions and strategic approaches
1.If “BIRD” is coded as “DGLF”, how is “FISH” coded?
a) HKUK
b) HKTM
c) HJVK
d) HJWK
Answer 1:c) HJVK
| Explanation : Each letter in “BIRD” is shifted by two positions to the right. Applying the same pattern to “FISH” results in “HJVK.” |
2.If “APPLE” is coded as “XOORK,” how is “ORANGE” coded?
a) LFZSTJ
b) LZSTJF
c) ZSTJFL
d) STJFLZ
Answer 2:b) LZSTJF
| Explanation: Each letter in “APPLE” is replaced by the letter two positions before it in the alphabet. Applying the same pattern to “ORANGE” results in “LZSTJF.” |
3.If “CHAIR” is coded as “GIKOS,” how is “TABLE” coded?
a) EBCMF
b) FCDNG
c) UCDNG
d) UDCNG
Answer 3:d) UDCNG
| Explanation : Each letter in “CHAIR” is shifted by four positions to the right. Applying the same pattern to “TABLE” results in “UDCNG.” |
4.If “EARTH” is coded as “94523,” how is “SUN” coded?
a) 352
b) 254
c) 452
d) 245
Answer 4:a) 352
| Explanation : Each letter in “EARTH” is coded based on its position in the alphabet. Applying the same pattern to “SUN” results in “352.” |
5.If “TRAIN” is coded as “WTMFS,” how is “CAR” coded?
a) FMU
b) FSM
c) FNU
d) FNM
Answer 5: b) FSM
| Explanation : Each letter in “TRAIN” is shifted by five positions to the right. Applying the same pattern to “CAR” results in “FSM.” |
6.If “DOCTOR” is coded as “RDCOTO,” how is “NURSE” coded?
a) ERNUS
b) RUNSE
c) ESURN
d) RENUS
Answer 6:a) ERNUS
| Explanation:Each letter in “DOCTOR” is reversed, and then the letters are combined. Applying the same pattern to “NURSE” results in “ERNUS.” |
7.If “SQUARE” is coded as “UQSEAR,” how is “CIRCLE” coded?
a) ECIRLC
b) EICRCL
c) ECRLCI
d) ECLIRC
Answer 7:c) ECRLCI
| Explanation: Each letter in “SQUARE” is rearranged in a pattern. Applying the same pattern to “CIRCLE” results in “ECRLCI.” |
8.If “MANGO” is coded as “OGNAM,” how is “BANANA” coded?
a) ABNANA
b) NABNAA
c) NAABNA
d) AABNNA
Answer 8:c) NAABNA
| Explanation: The letters in “MANGO” are reversed. Applying the same pattern to “BANANA” results in “NAABNA.” |
9.If “WATER” is coded as “XRWTE,” how is “FIRE” coded?
a) RIFE
b) FIER
c) REFY
d) EFIR
Answer 9:a) RIFE
| Explanation: Each letter in “WATER” is shifted one position to the left. Applying the same pattern to “FIRE” results in “RIFE.” |
10.If “SUN” is coded as “VUP,” how is “MOON” coded?
a) OPQR
b) NOPP
c) NPPQ
d) NNPP
Answer 10: d) NNPP
| Explanation: Each letter in “SUN” is shifted two positions to the right. Applying the same pattern to “MOON” results in “NNPP.” |
11.If “GARDEN” is coded as “EGDRNA,” how is “FLOWER” coded?
a) ELFOWR
b) WORFEL
c) WOLFRE
d) WEROLF
Answer 11:c) WOLFRE
| Explanation: The letters in “GARDEN” are rearranged in a pattern. Applying the same pattern to “FLOWER” results in “WOLFRE.” |
12.If “TIGER” is coded as “EGIRT,” how is “LION” coded?
a) NOIL
b) LNOI
c) OINL
d) INLO
Answer 12:a) NOIL
| Explanation: The letters in “TIGER” are reversed. Applying the same pattern to “LION” results in “NOIL.” |
13.If “JUPITER” is coded as “RETIJUP,” how is “SATURN” coded?
a) TARNUS
b) NATRUS
c) TUNRAS
d) NARUST
Answer 13:c) TUNRAS
| Explanation: The letters in “JUPITER” are reversed. Applying the same pattern to “SATURN” results in “TUNRAS.” |
14.If “MIRROR” is coded as “RORRIM,” how is “WINDOW” coded?
a) WONDIW
b) WIDNOW
c) DNIWOW
d) DOWINW
Answer 14: b) WIDNOW
| Explanation: The letters in “MIRROR” are reversed. Applying the same pattern to “WINDOW” results in “WIDNOW.” |
15.If “SCHOOL” is coded as “HCOOLS,” how is “COLLEGE” coded?
a) EGLLOCE
b) EGLOCLE
c) EGLOCLE
d) ELGOCLE
Answer 15:a) EGLLOCE
| Explanation: The letters in “SCHOOL” are rearranged in a pattern. Applying the same pattern to “COLLEGE” results in “EGLLOCE.” |
16.If “OCEAN” is coded as “ANCEO,” how is “RIVER” coded?
a) VREIR
b) EVRIR
c) REIVR
d) REVIR
Answer 16:d) REVIR
| Explanation: The letters in “OCEAN” are rearranged in a pattern. Applying the same pattern to “RIVER” results in “REVIR.” |
17.If “ELEPHANT” is coded as “TNAHPELE,” how is “GIRAFFE” coded?
a) EFFARIIG
b) GFAIRFIE
c) AFFIREIG
d) FFAERGII
Answer 17:c) AFFIREIG
| Explanation: The letters in “ELEPHANT” are reversed. Applying the same pattern to “GIRAFFE” results in “AFFIREIG.” |
18.If “TIGER” is coded as “RIGET,” how is “LION” coded?
a) NOIL
b) LNOI
c) OINL
d) INLO
Answer 18: a) NOIL
| Explanation: The letters in “TIGER” are rearranged in a pattern. Applying the same pattern to “LION” results in “NOIL.” |
19.If “WATER” is coded as “REWAT,” how is “FIRE” coded?
a) REFI
b) FIRE
c) RIFE
d) ERIF
Answer 19:c) RIFE
| Explanation: The letters in “WATER” are reversed. Applying the same pattern to “FIRE” results in “RIFE.” |
20.If “SUN” is coded as “NSU,” how is “MOON” coded?
a) NOOM
b) NMOO
c) OMON
d) NOOM
Answer 20:c) OMON
| Explanation: The letters in “SUN” are rearranged in a pattern. Applying the same pattern to “MOON” results in “OMON.” |
21.If “PENCIL” is coded as “LECNIP,” how is “PAPER” coded?
a) REPAP
b) PRAEP
c) REAPP
d) REPAE
Answer 21:a) REPAP
| Explanation: The letters in “PENCIL” are reversed. Applying the same pattern to “PAPER” results in “REPAP.” |
22.If “MOUNTAIN” is coded as “NUOTNIAM,” how is “RIVER” coded?
a) RIVRE
b) RREVI
c) REIVR
d) REVRIR
Answer 22: d) REVRIR
| Explanation: The letters in “MOUNTAIN” are reversed. Applying the same pattern to “RIVER” results in “REVRIR.” |
23.If “BRAVE” is coded as “EVARB,” how is “STRONG” coded?
a) GNORTS
b) GORTSN
c) NGORTS
d) TSGORN
Answer 23:a) GNORTS
| Explanation: The letters in “BRAVE” are reversed. Applying the same pattern to “STRONG” results in “GNORTS.” |
24.If “ORANGE” is coded as “EGNARO,” how is “APPLE” coded?
a) ELPPA
b) EPPLA
c) EPLAP
d) ELPAP
Answer 24:d) ELPAP
| Explanation:The letters in “ORANGE” are reversed. Applying the same pattern to “APPLE” results in “ELPAP.” |
25.If “COMPUTER” is coded as “RETUPMOC,” how is “KEYBOARD” coded?
a) DRAOBEYK
b) BOERDYEK
c) DOYKBEER
d) BOEKYDOR
Answer 25: a) DRAOBEYK
| Explanation: The letters in “COMPUTER” are reversed. Applying the same pattern to “KEYBOARD” results in “DRAOBEYK.” |
26.If “GUITAR” is coded as “RAITUG,” how is “PIANO” coded?
a) NOAIP
b) ONAIP
c) AONIP
d) AOIPN
Answer 26:a) NOAIP
| Explanation: The letters in “GUITAR” are reversed. Applying the same pattern to “PIANO” results in “NOAIP.” |
27.If “MANGO” is coded as “OGNAM,” how is “APPLE” coded?
a) ELPPA
b) EPLAP
c) ELPAP
d) EPPLA
Answer 27:a) ELPPA
| Explanation: The letters in “MANGO” are reversed. Applying the same pattern to “APPLE” results in “ELPPA.” |
28.If “TABLE” is coded as “ELBAT,” how is “CHAIR” coded?
a) RAIHC
b) RIAHC
c) RACIH
d) RHCIA
Answer 28:a) RAIHC
| Explanation: The letters in “TABLE” are reversed. Applying the same pattern to “CHAIR” results in “RAIHC.” |
29.If “JUPITER” is coded as “RETIJUP,” how is “VENUS” coded?
a) SUENV
b) SUNEV
c) SENUV
d) SVNUE
Answer 29:b) SUNEV
| Explanation: The letters in “JUPITER” are reversed. Applying the same pattern to “VENUS” results in “SUNEV.” |
30.If “SQUARE” is coded as “RUQASE,” how is “CIRCLE” coded?
a) RICLEC
b) CILCRE
c) CIRCEL
d) CILERC
Answer 30:c) CIRCEL
| Explanation: The letters in “SQUARE” are rearranged in a pattern. Applying the same pattern to “CIRCLE” results in “CIRCEL.” |
RRB Group D Shapes and their Sub-sections
1.Which of the following shapes is a polygon with five sides?
a) Triangle
b) Square
c) Pentagon
d) Hexagon
Answer: c) Pentagon
2.What is the total number of degrees in the interior angles of a hexagon?
a) 120 degrees
b) 180 degrees
c) 360 degrees
d) 720 degrees
Answer: c) 360 degrees
3.If a rectangle has a length of 8 cm and a width of 5 cm, what is its area?
a) 13 cm²
b) 20 cm²
c) 26 cm²
d) 40 cm²
Answer: b) 20 cm²
4.Which of the following is a three-dimensional shape?
a) Circle
b) Sphere
c) Square
d) Triangle
Answer: b) Sphere
5.If the radius of a circle is 6 cm, what is its circumference? (Use π = 3.14)
a) 18.84 cm
b) 12.56 cm
c) 37.68 cm
d) 113.04 cm
Answer: c) 37.68 cm
6.How many sides does a heptagon have?
a) 6
b) 7
c) 8
d) 9
Answer: b) 7
7.If the base of a triangle is 10 cm and its height is 8 cm, what is the area of the triangle?
a) 40 cm²
b) 45 cm²
c) 80 cm²
d) 20 cm²
Answer: a) 40 cm²
8.Which of the following is an obtuse-angled triangle?
a) Equilateral triangle
b) Isosceles triangle
c) Scalene triangle
d) Right-angled triangle
Answer: c) Scalene triangle
9.If a square has a perimeter of 24 cm, what is the length of each side?
a) 4 cm
b) 6 cm
c) 8 cm
d) 12 cm
Answer: b) 6 cm
10.What is the volume of a cube with a side length of 3 cm?
a) 9 cm³
b) 18 cm³
c) 27 cm³
d) 36 cm³
Answer: c) 27 cm³
11.What is the sum of the interior angles of a quadrilateral?
a) 180 degrees
b) 360 degrees
c) 540 degrees
d) 720 degrees
Answer: b) 360 degrees
12.If the diameter of a circle is 14 cm, what is its radius?
a) 7 cm
b) 14 cm
c) 3.5 cm
d) 21 cm
Answer: a) 7 cm
13.Which of the following is an example of a regular polygon?
a) Irregular hexagon
b) Regular octagon
c) Scalene triangle
d) Parallelogram
Answer: b) Regular octagon
14.If the base of a pyramid is a square with a side length of 5 cm, and the height is 8 cm, what is its volume?
a) 80 cm³
b) 100 cm³
c) 160 cm³
d) 200 cm³
Answer: a) 80 cm³
15.If the diagonal of a rectangle is 10 cm, and the length is 6 cm, what is the width of the rectangle?
a) 8 cm
b) 9 cm
c) 10 cm
d) 12 cm
Answer: a) 8 cm
16.What is the sum of the angles in a triangle?
a) 90 degrees
b) 180 degrees
c) 270 degrees
d) 360 degrees
Answer: b) 180 degrees
17.If a cone has a radius of 4 cm and a height of 6 cm, what is its volume?
a) 24 cm³
b) 48 cm³
c) 64 cm³
d) 96 cm³
Answer: b) 48 cm³
18.Which of the following is a convex polygon?
a) Star-shaped polygon
b) Regular hexagon
c) Concave quadrilateral
d) Equilateral triangle
Answer: b) Regular hexagon
19.If the base of a prism is a rectangle with length 5 cm and width 3 cm, and the height of the prism is 8 cm, what is its volume?
a) 40 cm³
b) 120 cm³
c) 160 cm³
d) 240 cm³
Answer: b) 120 cm³
20.What is the measure of each interior angle in a regular pentagon?
a) 72 degrees
b) 90 degrees
c) 108 degrees
d) 120 degrees
Answer: c) 108 degrees
21.If the hypotenuse of a right-angled triangle is 10 cm and one of the legs is 6 cm, what is the length of the other leg?
a) 4 cm
b) 6 cm
c) 8 cm
d) 12 cm
Answer: a) 4 cm
22.Which of the following is an example of a regular polyhedron?
a) Cylinder
b) Tetrahedron
c) Cone
d) Hemisphere
Answer: b) Tetrahedron
23.If the radius of a circle is doubled, how does the area of the circle change?
a) It remains the same
b) It is halved
c) It is doubled
d) It is quadrupled
Answer: d) It is quadrupled
24.What is the sum of the interior angles of an octagon?
a) 180 degrees
b) 360 degrees
c) 540 degrees
d) 720 degrees
Answer: c) 540 degrees
25.If the base of a pyramid is a triangle with base length 6 cm and height 8 cm, and the height of the pyramid is 10 cm, what is its volume?
a) 80 cm³
b) 120 cm³
c) 160 cm³
d) 240 cm³
Answer: a) 80 cm³
26.Which of the following is an example of a concave polygon?
a) Regular hexagon
b) Equilateral triangle
c) Star-shaped polygon
d) Isosceles trapezoid
Answer: c) Star-shaped polygon
27.If the diameter of a sphere is 12 cm, what is its volume? (Use=3.14Ï€=3.14)
a) 904.32 cm³
b) 150.72 cm³
c) 723.72 cm³
d) 1809.6 cm³
Answer: a) 904.32 cm³
RRB Group D Problems based on Clocks
1.At what angle are the hour and minute hands of a clock inclined at 3:15?
a) 0 degrees
b) 22.5 degrees
c) 45 degrees
d) 67.5 degrees
Answer: b) 22.5 degrees
2.If the time is 4:20, what is the acute angle between the hour and minute hands of the clock?
a) 80 degrees
b) 90 degrees
c) 100 degrees
d) 120 degrees
Answer: c) 100 degrees
3.How many times do the hands of a clock coincide in 12 hours?
a) 11
b) 12
c) 22
d) 24
Answer: a) 11
4.If it is 2:30 PM, what is the angle between the hour and minute hands?
a) 30 degrees
b) 45 degrees
c) 60 degrees
d) 75 degrees
Answer: d) 75 degrees
5.At what time between 4 and 5 o’clock will the hands of the clock be together?
a) 4:20
b) 4:24
c) 4:30
d) 4:40
Answer: a) 4:20
6.If the time is 9:15 AM, what is the angle between the hour and minute hands?
a) 7.5 degrees
b) 15 degrees
c) 22.5 degrees
d) 30 degrees
Answer: c) 22.5 degrees
7.If a clock shows 3:45, what is the angle between the hour and minute hands?
a) 112.5 degrees
b) 135 degrees
c) 157.5 degrees
d) 180 degrees
Answer: a) 112.5 degrees
8.How many degrees does the minute hand move in 10 minutes?
a) 30 degrees
b) 45 degrees
c) 60 degrees
d) 90 degrees
Answer: c) 60 degrees
9.If the time is 6:40, what is the angle between the hour and minute hands?
a) 140 degrees
b) 150 degrees
c) 160 degrees
d) 170 degrees
Answer: c) 160 degrees
10.At what time will the hands of the clock be perpendicular?
a) 3:00
b) 3:15
c) 3:30
d) 3:45
Answer: c) 3:30
11.If the time is 8:20, what is the angle between the hour and minute hands?
a) 110 degrees
b) 120 degrees
c) 130 degrees
d) 140 degrees
Answer: c) 130 degrees
12.How many times do the hands of a clock overlap in a day?
a) 11
b) 12
c) 22
d) 24
Answer: d) 24
13.At what time do the hour and minute hands of the clock form a straight line?
a) 3:00
b) 3:15
c) 3:30
d) 3:45
Answer: b) 3:15
14.If the time is 5:25, what is the acute angle between the hour and minute hands?
a) 57.5 degrees
b) 62.5 degrees
c) 67.5 degrees
d) 72.5 degrees
Answer: b) 62.5 degrees
15.At what time will the hands of the clock be opposite each other?
a) 4:00
b) 4:15
c) 4:30
d) 4:45
Answer: a) 4:00
16.If the time is 10:40 AM, what is the angle between the hour and minute hands?
a) 80 degrees
b) 90 degrees
c) 100 degrees
d) 110 degrees
Answer: c) 100 degrees
17.How many degrees does the hour hand move in 15 minutes?
a) 15 degrees
b) 30 degrees
c) 45 degrees
d) 60 degrees
Answer: a) 15 degrees
18.If the time is 7:15, what is the angle between the hour and minute hands?
a) 93.75 degrees
b) 97.5 degrees
c) 101.25 degrees
d) 105 degrees
Answer: a) 93.75 degrees
19.At what time will the hands of the clock make a right angle?
a) 2:30
b) 3:00
c) 3:30
d) 4:00
Answer: a) 2:30
20.If the time is 11:50, what is the angle between the hour and minute hands?
a) 85 degrees
b) 90 degrees
c) 95 degrees
d) 100 degrees
Answer: c) 95 degrees
21.If the time is 6:15, what is the acute angle between the hour and minute hands?
a) 67.5 degrees
b) 75 degrees
c) 82.5 degrees
d) 90 degrees
Answer: a) 67.5 degrees
22.At what time will the hands of the clock make an angle of 180 degrees?
a) 3:00
b) 3:30
c) 4:00
d) 4:30
Answer: b) 3:30
23.If the time is 9:50, what is the angle between the hour and minute hands?
a) 105 degrees
b) 110 degrees
c) 115 degrees
d) 120 degrees
Answer: c) 115 degrees
24.How many degrees does the minute hand move in 20 minutes?
a) 60 degrees
b) 80 degrees
c) 100 degrees
d) 120 degrees
Answer: a) 60 degrees
25.At what time between 6 and 7 o’clock will the hands of the clock be perpendicular?
a) 6:10
b) 6:20
c) 6:30
d) 6:40
Answer: c) 6:30
26.If the time is 12:15, what is the angle between the hour and minute hands?
a) 3.75 degrees
b) 7.5 degrees
c) 11.25 degrees
d) 15 degrees
Answer: d) 15 degrees
27.How many times do the hands of a clock coincide in a day?
a) 20
b) 22
c) 24
d) 26
Answer: c) 24
28.At what time will the hands of the clock be opposite each other?
a) 8:00
b) 8:15
c) 8:30
d) 8:45
Answer: a) 8:00
29.If the time is 5:45, what is the angle between the hour and minute hands?
a) 112.5 degrees
b) 120 degrees
c) 127.5 degrees
d) 135 degrees
c) 127.5 degrees
30.At what time will the hands of the clock make a right angle?
a) 9:00
b) 9:15
c) 9:30
d) 9:45
Answer: b) 9:15
| Join Our Whats app Channel Links |
Â