alleryStart learning →If 'MOUSE' = 'LNTRD' in a code, what is 'KEY'?
- LDX
- LFZ
- JDX
- JFY
Show answer and solution
Correct answer: C. JDX
Each letter shifted by -1 (one back).
M→L, O→N, U→T, S→R, E→D. So K→J, E→D, Y→X = JDX.
DRDO Apprentice Coding Decoding — practice questions — page 2
Explore 109 free Coding Decoding questions in DRDO Apprentice Reasoning. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 31–60 of 109.
If 'MOUSE' = 'LNTRD' in a code, what is 'KEY'?Read the answer and worked solution →Ravi walks 5 km north, then 3 km east, then 5 km south. How far is he from the starting point?Read the answer and worked solution →Anand walks 10 m east, then 5 m north, then 10 m west, then 5 m north. Final direction from start:Read the answer and worked solution →A person facing north turns right by 90°, then left by 90°. He is now facing:Read the answer and worked solution →Find the odd one out:Read the answer and worked solution →In a class of 50 students, 30 play cricket and 25 play football. 10 play both. How many play neither?Read the answer and worked solution →Among 100 students, 60 like math, 50 like science, 40 like both. How many like only math?Read the answer and worked solution →Five friends A, B, C, D, E sit in a row. A is to the left of B, but right of C. D is right of B. E is leftmost. Order:Read the answer and worked solution →If 1, 2, 3 are adjacent faces of a cube and opposite face of 1 is 6, opposite of 2 is 5, what is opposite of 3?Read the answer and worked solution →In the series Z Y X W V U T S, what is the 5th letter from the right?Read the answer and worked solution →If 'A' = 1, 'B' = 2, ... 'Z' = 26, then sum of letters in 'CAT':Read the answer and worked solution →If 1st January 2024 was a Monday, what day was 1st March 2024 (2024 is a leap year)?Read the answer and worked solution →Statements: (i) All students are hardworking. (ii) Rohan is not hardworking. Which conclusion is valid?Read the answer and worked solution →All ducks swim. Donald is a duck. Therefore:Read the answer and worked solution →A is twice as old as B. B is 3 years older than C. If C is 5, how old is A?Read the answer and worked solution →Sum of 5 consecutive integers is 60. The largest is:Read the answer and worked solution →SSC CGL · Letter-Number CodesRead the answer and worked solution →SSC CGL · Coding-Decoding — Tap in OrderRead the answer and worked solution →If MYSTIFY is coded as NZTUJGZ, how is letter A coded in this rule?Read the answer and worked solution →In a code, CAT = 3-1-20 (position numbers). What is the code for DOG?Read the answer and worked solution →Coding-Decoding tests the candidate's ability to detectRead the answer and worked solution →If MOTHER is coded as NPUIFS, the rule isRead the answer and worked solution →Under +1 rule, BREAD is coded asRead the answer and worked solution →Under the rule 'reverse each pair', the code of ROAD isRead the answer and worked solution →If 5+3=28, 9+1=810, what is 7+2?Read the answer and worked solution →If RAIN = 18-1-9-14, then COIN equalsRead the answer and worked solution →If 'cat' is coded as 'animal' and 'animal' is coded as 'pet', what is a kitten?Read the answer and worked solution →Find the code for NEMESIS under the +1 ruleRead the answer and worked solution →If POND = QPOE, then what is the code for LAKE?Read the answer and worked solution →In a code, A=1, B=2... What number sum represents 'DAD'?Read the answer and worked solution →
Worked practice questions
Ravi walks 5 km north, then 3 km east, then 5 km south. How far is he from the starting point?
- 3 km
- 8 km
- 13 km
- 5 km
Show answer and solution
Correct answer: A. 3 km
North 5 km then south 5 km cancel (net 0 in N-S direction).
**Net displacement:** 3 km east.
**So 3 km from start.**
Anand walks 10 m east, then 5 m north, then 10 m west, then 5 m north. Final direction from start:
- East 10 m
- North 10 m
- South 10 m
- West 5 m
Show answer and solution
Correct answer: B. North 10 m
East 10 m and west 10 m cancel.
North 5 m + north 5 m = north 10 m.
**Final position:** 10 m north of start.
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