2,15,41,80,?
Answer: Option D
Explanation:
The pattern is + 13, + 26, + 39,.....
So, missing term = 80 + 52 = 132.
6, 11, 21, 36, 56, ?
Answer: Option C
The pattern is + 5, + 10, + 15, + 20, ...
So, missing term = 56 + 25 = 81.
563, 647, 479, 815, ?
The pattern is + 84, - 168, + 336,.....i.e. + 84, - (84 x 2), + (84 x 22), .....
So, missing term = 815 - (84 x 23) = 815 - 672 = 143.
13, 35, 57, 79, 911, ?
The terms of the given series are numbers formed by joining together consecutive
odd numbers in order i.e. 1 and 3, 3 and 5, 5 and 7, 7 and 9, 9 and 11, .....
So, missing term = number formed by joining 11 and 13 = 1113.
1, 4, 10, 22, 46, ?
The pattern is + 3, + 6, + 12, + 24,.....
So, missing term = 46 + 48 = 94.
