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Collection=missing-number#puzzle57

 What number will replace the question mark In the table?

 

 

 Discover the way the numbers are related in this challenging puzzle.

Try to find the missing number



Answer

If the number of a row is AB the next number is:

AB=AXB+A+B

42=4X2+4+2=8+6=14

14=1X4+1+4=4+5=9

So 26=2X6+2+6=12+8=20

Correct answer is 20

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