Question

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Answer 1

Step-by-step explanation:

Puzzle 15

1st diagram,

First multiply 3 x 7 = 21

then 3 x 5 = 15

and add 21+15=36

2nd diagram,

first multiply 9 X2 =18

and then 4x 2 = 8

and add 18+8=26

3rd diagram,

first multiply 4 x 8 = 32

and then 4 x 5 = 20

and add 32+20= 52

4th diagram,

first multiply 2x 7= 14

and then 6x2 = 12

and add 12+14=26

answer is 36