Directions: Four/three of the following five/four are alike in a certain way and hence form a group. Which one does not belong to the group?
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Question 1 of 26
1. Question
Which one does not belong to the group ?
Hint
All others are divisible by 7 where as 65 is not divisible by 7.

Question 2 of 26
2. Question
Which one does not belong to the group ?
Hint
All others are not a cube number but 27 is a cube number.

Question 3 of 26
3. Question
Which one does not belong to the group ?
Hint
All other numbers are multiple of 4 except 82.

Question 4 of 26
4. Question
Which one does not belong to the group ?
Hint
All other numbers are prime numbers except 119.

Question 5 of 26
5. Question
Which one does not belong to the group ?
Hint
All other numbers are the square of other number except 8.

Question 6 of 26
6. Question
Which one does not belong to the group ?
Hint
All other numbers are prime numbers except 27.

Question 7 of 26
7. Question
Which one does not belong to the group ?
Hint
All other numbers are prime numbers except 9 while 9 is a composite number.

Question 8 of 26
8. Question
Which one does not belong to the group ?
Hint
48 = (7)² –1, 15 = (4)² – 1
24 = (5)² – 1, 35 = (6)² – 1
But, 65 = (8)² + 1

Question 9 of 26
9. Question
Which one does not belong to the group ?
Hint
All others are not divisible by 3 whereas 345 is divisible by 3.

Question 10 of 26
10. Question
Which one does not belong to the group ?
Hint
In all the rest numbers, the third digit is the product of first and second digit.

Question 11 of 26
11. Question
Which one does not belong to the group ?
Hint
(3)³ + 1 = 28,
(4)³ + 1 = 65,
(5)³ + 1 = 126,
6³ + 1 ≠ 215.

Question 12 of 26
12. Question
Which one does not belong to the group ?
Hint
In all the rest pairs, the difference is divisible by 3.

Question 13 of 26
13. Question
Which one does not belong to the group ?
Hint
In all other numbers, the sum of the digits is 17.

Question 14 of 26
14. Question
Which one does not belong to the group ?
Hint
In all the rest groups there is no common factor of the two numbers.

Question 15 of 26
15. Question
Which one does not belong to the group ?
Hint
In all other pairs, one number is the square of the other.

Question 16 of 26
16. Question
Which one does not belong to the group ?
Hint
83 is the only prime number in the group.

Question 17 of 26
17. Question
Which one does not belong to the group ?
Hint
In all other groups, the first number is obtained by adding 2 to the product of the second and the third numbers.

Question 18 of 26
18. Question
Which one does not belong to the group ?
Hint
(9 – 7)² = 4, (13 – 7)² = 36, (11 – 7)² = 16, but (9 – 5)² ≠ 25.

Question 19 of 26
19. Question
Which one does not belong to the group ?
Hint
The difference in all the other cases is 12.

Question 20 of 26
20. Question
Which one does not belong to the group ?
Hint
The product in all other cases is 96.

Question 21 of 26
21. Question
Which one does not belong to the group ?
Hint
The first two are to be added and the third is to subtracted to give a constant no. 6 viz. 5 + 4 – 3 = 6, 8 + 3 – 5 = 6, etc. but 6 + 5 – 4 ≠ 6.

Question 22 of 26
22. Question
Which one does not belong to the group ?
Hint
It does not have ‘4’ in the middle.

Question 23 of 26
23. Question
Which one does not belong to the group ?
Hint
The total no. of digits is seven, others are six.

Question 24 of 26
24. Question
Which one does not belong to the group ?
Hint
It is the set of all prime numbers.

Question 25 of 26
25. Question
Which one does not belong to the group ?
Hint
The sum is a prime number.

Question 26 of 26
26. Question
Which one does not belong to the group ?
Hint
The sum of all numbers in each set is 100 except (b) ≠ 100 .