Question 176

If 1 + 4=9, 2 + 8=18, 3+6 = 15 then 7 + 8 = ?

Solution
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Here we are given :

1 + 4=9

2 + 8=18

3+6 = 15

So if the number is , x + y then it is equal to [(x+y) + y]

here we need to calculate value of 7 + 8 = [(7 + 8) + 8] = 23

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