Question

9=90 8=72 7=56 6=42 3=?

Answer 1

9*10=90
8*9=72
7*8=56
6*7=42

So
3*4=12

here the logic is the number multiplied by its upper number is the solution of problem. Like 9 is multiplied by 10 is equal to 90 and in question 9=90. Hence logic working.

Answer 2

According to question

9=90  (10 X9 =90)
8=72  ( 9 x8 =72)
7=56  (8 x7 =56)
6=42  (7 x6 =42)
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3=?  (4 x3 =12)

so the answer is 12 .

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