Question

complete the series..

6,7,9,13,21,__

a)25
b)29
c)37
d)32...

Answer 1

7-6=1

9-7=2

13-9=4

21-13=8

Since each time the difference is double of the previous difference,
So the next difference should be double of 8.

2*8=16

The next number in the series is =
21+16=37

The required number is (c) 37

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Answer 2

▶Correct option is C ♍