What number best completes the following series 1 9 25 blank 81 100?

Answer 1

1^2 = 1

3^2 = 9

5^2 = 25

so 7^2 = 49 (missing number)

9^2 = 81

Following the same pattern of odd numbers squared,

the next number should be 11^2 = 121, not 10^2 = 100.

The (100) seems to be out of sequence according to the

pattern.