Find out the wrong number in the given sequence of numbers.
Answer: Option A
Explanation:
Go on adding 5, 8, 11, 14, 17, 20.
So, the number 47 is wrong and must be replaced by 46.
Alternatively 23 is added and 17 is subtracted from the terms. So, 634 is wrong.
The numbers are squares of odd natural numbers, starting from 5 up to 15.
So, 36 is wrong.
Answer: Option C
The terms are successively divided by 12, 10, 8, 6, ...etc.
So, 24 is wrong, it should be 8 (48/6 = 8).
Answer: Option D
Prime numbers 2, 3, 5, 7, 11, 13 are to be added successively.
So, 165 is wrong.
Answer: Option B
Subtract 1, 3, 5, 7, 9, 11 from successive numbers.
So, 34 is wrong.
Subtract 20, 25, 30, 35, 40, 45 from successive numbers.
So, 0 is wrong.
Each number is a composite number except 11.
Each of the number except 279 is a multiple of 11.
1, 1 + 12 = 2, 2 + 22 = 6, 6 + 32 = 15, 15 + 42 = 31, 31 + 52 = 56, 56 + 62 = 92
Last number of given series must be 92 not 91.
