The next number in this series 7, 9, 11, 13, 15, is:

Solution:

Given series 7, 9, 11, 13, 15

The second term is 2 added to the first term

Similarly, the third term is 2 added to the second term

Similarly, the fourth term is 2 added to the third term

Hence, the sequence is in arithmetic progression as the common difference between the terms in the series is 2.

Arithmetic progression is defined as the sequence of numbers that differs by a constant number from the preceding term.

Therefore, the next term would be 2 added to the last term

Hence, the required number is 15 + 2 = 17

The next number in this series 7, 9, 11, 13, 15, is:

Summary:

The next number in this series 7, 9, 11, 13, 15, is 17.