Find the odd one out: 369 462 761 862 761 is the only prime in the group.

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Question
Find the odd one out:
Options
A. 369
B. 462
C. 761
D. 862

Correct Answer

761

Explanation

761 is the only prime in the group.

Classification problems

Search Results

1. Find the odd one out:
Options
A. 361
B. 484
C. 566
D. 529

Discuss

Correct Answer: 566

Explanation:

566 is the odd one out as the rest of the numbers are perfect squares.

2. Find the odd one out:
Options
A. 28
B. 65
C. 126
D. 215

Discuss

Correct Answer: 28

Explanation:

28 is the only number with all even digits.

3. Find the odd one out:
Options
A. 263
B. 111
C. 242
D. 551

Discuss

Correct Answer:

Explanation:

In all the numbers except 383, the middle digit is the product of the other two digits.

4. Find the odd one out:
Options
A. 2
B. 16
C. 56
D. 128

Discuss

Correct Answer: 56

Explanation:

Except 56 all can be expressed as power of 2.

5. Find the odd one out:
Options
A. 119
B. 136
C. 147
D. 153

Discuss

Correct Answer: 119

Explanation:

Only 119 has different factors, 7 and 17 and no factors are repeated.

6. Find the odd one out:
Options
A. 21
B. 69
C. 81
D. 83

Discuss

Correct Answer: 83

Explanation:

All are multiple of 3 except 83.

7. Find the odd one out:
Options
A. 1236
B. 2346
C. 4566
D. 5686

Discuss

Correct Answer: 5686

Explanation:

The unit digit remains same, and the thousand place, hundredth place and tenth place changes and follow particular pattern except in 5686.

8. Find the odd one out:
Options
A. 11
B. 13
C. 15
D. 17

Discuss

Correct Answer: 15

Explanation:

All numbers are prime numbers except 15.

9. Find the odd one out:
Options
A. 17
B. 13
C. 23
D. 37

Discuss

Correct Answer: 23

Explanation:

All numbers are prime numbers but when we reverse the digits all except 23 remain prime numbers.

10. Find the odd one out:
Options
A. 126
B. 217
C. 345
D. 513

Discuss

Correct Answer: 345

Explanation:

All the numbers except 345 are one more than the cube of a certain number.

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