What number should replace the question mark in the sequence?
Correct answer: 7
Explanation:
The sequence is 52, 39, 28, 19, 12, ?.
Look at the differences between the numbers:
52 - 39 = 13
39 - 28 = 11
28 - 19 = 9
19 - 12 = 7
The numbers are decreasing by consecutive odd numbers:
13, 11, 9, 7
So the next odd number to subtract is 5.
Now subtract:
12 - 5 = 7
Therefore, the missing number is 7.
Finall answer to this puzzle: 7
