Answer to Q105
13,6,2 = 20 and 4,9,5 = 11 and 9,2,3 = 25 and 15,5,4 = ?
A,B,C = D
A x C - B = D
For example:
13 x 2 - 6 = 20
4 x 5 - 9 = 11
9 x 3 - 2 = 25
So,
15 x 4 - 5 = 55
Answer: 55
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