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QUESTION
Q
What will come in place of question mark (?) in the following number series:
12, 35, 81, 173, 357, (?)
What will come in place of question mark (?) in the following number series:
12, 35, 81, 173, 357, (?)
A
725
B
715
C
726
D
736
E
748
A
725
B
715
C
726
D
736
E
748
Solution
The pattern of the number series is :
12 + 20 × 23 = 35
35 + 21 × 23 = 35 + 46 = 81
81 +...
The pattern of the number series is :
12 + 20 × 23 = 35
35 + 21 × 23 = 35 + 46 = 81
81 + 22 × 23 = 81 + 92 = 173
173 + 23 × 23 = 173 + 184 = 357
357 + 24 × 23 = 357 + 368 = 725
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