Originally Posted by
Rike73
1. Answer is 90
They are backward multiples of square root integers.
9x9 = 81
8x8 = 64
7x7 = 49
6x6 = 36
5x5 = 25
4x4 = 16
2.Answer is T
They are the first letter of the numbers 1 to 10
3.Answer is 64
If I wrote it this way would it help?
1, 2², 3, 4², 5, 6², 7...
The odd terms are just the odd numbers:
1, 3, 5, 7, (9, 11, 13, etc.)
The even terms are just the (even) number squared:
4, 16, 36, (64, 100, 144, etc.)
The pattern is:
n if the term is odd, or n² if the term is even.
1, 4, 3, 16, 5, 36, 7, 64, 9, 100, 11, 144, 13, 196, 15, 256, etc.