1.

If 1x2 = 32, 4x3 = 712, 4x7 = 1128 then 5x1 will be equal to (1) 63 (2) 64 (3) 65 (4) 66

Answer»

(3) 65

Pattern is :- a x b = 

(sum of a, b) (product of a, b)



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