Classification
Direction: In each of the following questions, five/four number are given. Out of these four/three are like in a certain way but one is different. Choose the one which is different from the rest four/three.
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Only 729 is a perfect cube.
Correct Option: A
Only 729 is a perfect cube.
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Except 124, all other numbers are multiples of 3.
Correct Option: C
Except 124, all other numbers are multiples of 3.
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9 - 2 = 7 . → 72 = 49
13 - 2 = 11 → 112 = 121
10 - 2 = 8 → 82 = 64 ≠ 61
7 - 2 = 5 → 52 = 25Correct Option: C
9 - 2 = 7 . → 72 = 49
13 - 2 = 11 → 112 = 121
10 - 2 = 8 → 82 = 64 ≠ 61
7 - 2 = 5 → 52 = 25
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∵ 272 = 2 + 7 + 2 = 11
210 = 2 + 1 + 0 = 3
240 = 2 + 4 + 0 = 6
304 = 3 + 0 + 4 = 7
The sum of digit of all number except 240 is a prime number where as sum of number 240 digit is a non-prime. Hence, it is different from all others.Correct Option: C
∵ 272 = 2 + 7 + 2 = 11
210 = 2 + 1 + 0 = 3
240 = 2 + 4 + 0 = 6
304 = 3 + 0 + 4 = 7
The sum of digit of all number except 240 is a prime number where as sum of number 240 digit is a non-prime. Hence, it is different from all others.
- NA
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Except 28*, all others are multiples of 3.
Correct Option: D
Except 28*, all others are multiples of 3.
