1.

The average of five consecutive even numbers A, B, C, D and E is 42. What is the product of B and D ?

Answer»

1760



A + B + C + D + E/5 = 42
∴ C = 42,
∴ B = 40,
∴ D = 44
∴ B X D = 40 x 44 = 1760



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