Find out the wrong number in the given sequence of numbers 1, 2, 6, 15, 31, 56, 91
Answer: B
1, 1 + 1⊃2; = 2, 2 + 2⊃2; = 6, 6 + 3⊃2; = 15, 15 + 4⊃2; = 31, 31 + 5⊃2; = 56, 56 + 6⊃2; = 92
Last number of given series must be 92 not 91.
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Find the odd man out. 8, 27, 64, 100, 125, 216, 343
Answer: B
The pattern is 2⊃3;, 3⊃3;, 4⊃3;, 5⊃3;, 6⊃3;, 7⊃3;. But, 100 is not a perfect cube.
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Find the odd man out. 41, 43, 47, 53, 61, 71, 73, 81
Answer: D
Each of the numbers except 81 is a prime number.
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Insert the missing number 2, 4, 12, 48, 240, (....)
Answer: B
Go on multiplying the given numbers by 2, 3, 4, 5, 6.
So, the correct next number is 1440.
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Find the one which does not belong to that group ?
Answer: B
343 = 7⊃3;, 1331 = 11⊃3;, 2197 = 13⊃3; and 125 = 5⊃3;.
343, 1331, 2197 and 125 are perfect cubes, but not 121.
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Find the odd man out. 1, 4, 9, 16, 20, 36, 49
Answer: C
The pattern is 1⊃2;, 2⊃2;, 3⊃2;, 4⊃2;, 5⊃2;, 6⊃2;, 7⊃2;. But, instead of 5⊃2;, it is 20 which to be turned out.
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Find the one which does not belong to that group ?
Answer: B
The digits on either side of the letter in each of the groups 1P6, 2T0, 1M3 and 1R8 indicate the place value of the letter in the alphabet.
This pattern is not followed by 2Y4.
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Find the one which does not belong to that group ?
Answer: B
3, 5, 9 and 7 are odd numbers, but not 4.
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Find the one which does not belong to that group ?
Answer: B
Part, Cart, Dart and Mart are rhyming words, but Trap does not sound similarly.
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Find the one which does not belong to that group ?
Answer: D
Walk, Talk, Drink and Lick are verbs, but not Plank.
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