self Company Numerical Ability

Find the appropriate answer: If 56 x 72 = 79, 32 x 4 = 81, 9 x 12 = 34, 25 x 30=56 then, 49x42=? (a) 77 (b) 52 (c)76 (d) 67

Read Solution (Total 1)

(c) 76

56 x 72
=> (7*8) x (8*9)
remove common factor 8, then 56 x 72 = 79

32 x 4 = (8*4) x (4*1) = 81 here 4 is common .

so, 49x42= (7*7) x (7*6) = 76
9 years agoHelpfull: Yes(3) No(1)

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