Explanation:
it starts of with 3, 5, 7 sp the pattern is increasing by 2 starting from 3
The pattern = odd numbers increasing by 2.
4 - 1 = 3
9 - 4 = 5
16 - 9 = 7
What is the next number?
The next odd number is 9.
9 + 16 = 25
25 - 16 = 9
and so on....
Get it?
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