Maths Puzzles With Answers #45
Solutions:-
Working from top to bottom, double each number and subtract 1, then 2, then 3 etc.
3 + 3 - 1 = 6 - 1 = 5
5 + 5 - 2 = 8
8 + 8 - 3 = 13
13 + 13 - 4 = 22
22 + 22 - 5 = 39
So answer is 39
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