2, 5, 9, ?, 20, 27
Answer: Option A
Explanation:
The pattern is + 3, + 4, + 5, + 6,.....
So, missing term = 9 + 5 = 14.
2, 3, 3, 5, 10, 13, ?, 43, 172, 177
Answer: Option C
The pattern is + 1, x 1, + 2, x 2, + 3, x 3, + 4, x 4, + 5.
So, missing term = 13 x 3 = 39.
9, 27, 31, 155, 161, 1127, ?
Answer: Option B
The pattern is x 3, + 4, x 5, + 6, x 7,.....
So, missing term = 1127 + 8 = 1135.
2, 1, 2, 4, 4, 5, 6, 7, 8, 8, 10, 11, ?
The given sequence is a combination of three series :
I. 1st, 4th, 7th, 10th, 13th terms i.e. 2, 4, 6, 8, ?
II. 2nd, 5th, 8th, 11th terms i.e. 1, 4, 7, 10
III. 3rd, 6th, 9th, 12th terms i.e. 2, 5, 8, 11
Clearly, I consists of consecutive even numbers. So, the missing term is 10.
Which of the following will not be a number of the series 1, 8, 27, 64, 125,.....?
The given series consists of cubes of natural numbers only. 256 is not the cube of
any natural number.
