Question

What number should be written instead of X in the figure if in each circle of the first 4 lines the numbers are obtained by adding the two that are immediately below it?

Answer 1

Answer: 82

Explanation:

82

35 47

15 20 27

7 8 12 15

2 5 3 9 6

puzzle two numbers add up to one above

2 numbers under a number add up to make that number

2+5=7

5+3=8 etc