Question

4,2,2,3,6,15,_
next no.
how?​

Answer 1

Explanation:

Next number in the the series 4, 2, 2, 3, 6 is 15.

To understand this we have to work on below series:

1/2, 1, 3/2, 2, 5/2

In this series 1/2 is added in every number to get the next number.

Now, combine this series with the series in question, you will get the answer.

Puzzled..

Here is the explanation.

Multiply the number from questioned series to the series provided to get next number i.e.

4 * 1/2 = 2

2 * 1 = 2

2 * 3/2 =3

3 * 2 = 6

6 * 5/2 = 15