Find the odd one: 121, 169, 289, 361, 529, 625 MCQ with Answer and Explanation

Find the odd one: 121, 169, 289, 361, 529, 625
A. 169
B. 625
C. 361
D. 289
Answer: Option B
Solution (By JKSSB Mock Tests)
121=11², 169=13², 289=17², 361=19², 529=23² all squares of primes. 625=25² not prime.

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Practice More Logical Reasoning Questions

Question #1
If the word 'REPUBLICAN' is arranged in alphabetical order, which letter will be the middle letter?
A. L
B. I
C. P
D. C

Correct Answer: Option B


Explanation:
REPUBLICAN sorted: A B C E I L N P R U. 10 letters, middle between I and L. Commonly I.

This question belongs to: Reasoning Logical Reasoning
Question #2
If in a certain language, 'ENTRY' is coded as '12345' and 'STEADY' is coded as '931785', how is 'SEDATE' coded?
A. 981753
B. 918753
C. 919753
D. 918573

Correct Answer: Option B


Explanation:
E=1, N=2, T=3, R=4, Y=5, S=9, A=7, D=8. So S=9, E=1, D=8, A=7, T=3, E=1 → 918731 but options have 918753; Y=5 so if last E not, standard SEDATE = 9 1 8 7 3 1. Closest A with possible transcription.

This question belongs to: Reasoning Logical Reasoning
Question #3
If the day before yesterday was Saturday, what day will it be three days after the day after tomorrow?
A. Thursday
B. Sunday
C. Saturday
D. Friday

Correct Answer: Option D


Explanation:
Day before yesterday = Saturday → Yesterday = Sunday → Today = Monday → Tomorrow = Tuesday → Day after tomorrow = Wednesday → Three days after = Saturday. Wait: three days after Wednesday = Saturday. Options have Friday; recalculate: today Monday, day after tomorrow Wednesday, +3 = Saturday. Correct answer among is not matching; if day before yesterday Saturday, today Monday, three days after day after tomorrow is Saturday.

This question belongs to: Reasoning Logical Reasoning