Question

1,5,9,13,17,21,?
Please answer fast​

Answer 1

Answer:

The Hilbert numbers or S-numbers are numbers of the form 4n + 1. {1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 53, 57, 61, 65, 69, 73, 77, 81, 85, 89, 93, 97, 101, 105, 109, 113, 117, 121, 125, 129, 133, 137, 141, 145, 149, 153, 157, 161, 165, 169, 173, 177, 181, 185, ...}

Answer 2

Answer:

Your answer is 25

Explaination:

Here you just add 4 to the previous number.

That's it

Hope it may be helpful