What numbers should replace the question marks in the sequence?
Correct answer: 64, 9
Explanation:
The sequence is 3, 16, 5, 36, 7, ?, ?.
This sequence uses two alternating number patterns.
The numbers in the 1st, 3rd, 5th, and 7th positions are:
3, 5, 7, ?
They increase by 2 each time, so the next number is:
7 + 2 = 9
The numbers in the 2nd, 4th, and 6th positions are:
16, 36, ?
These are square numbers:
16 = 4²
36 = 6²
The next square is:
8² = 64
So the missing numbers are 64 and 9.
Finall answer to this puzzle: 64, 9
