Series Completion - Study Mode

[#151] 6, 11, 21, 36, 56, ?
Correct Answer

(C) 81

Explanation

Solution: The pattern is + 5, + 10, + 15, + 20, ... So, missing term = 56 + 25 = 81.

[#152] 563, 647, 479, 815, ?
Correct Answer

(D) 143

Explanation

Solution: The pattern is + 84, - 168, + 336,.....i.e. + 84, - (84 x 2), + (84 x 2 2 ), ..... So, missing term = 815 - (84 x 2 3 ) = 815 - 672 = 143.

[#153] 13, 35, 57, 79, 911, ?
Correct Answer

(C) 1113

Explanation

Solution: 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.

[#154] 1, 4, 10, 22, 46, ?
Correct Answer

(C) 94

Explanation

Solution: The pattern is + 3, + 6, + 12, + 24,..... So, missing term = 46 + 48 = 94.

[#155] 1, 5, 13,25,41,?
Correct Answer

(C) 61

Explanation

Solution: The pattern is + 4, + 8, + 12, + 16...... So, missing term = 41 + 20 = 61.