1.

Coefficient of range of variable series 10, 20, 30, 40, 50, 60 is –(A) 3/2(B) 5/6(C) 7/5(D) 5/7

Answer»

Answer is (D) 5/7

Coefficient of Range

= (60 - 10)/(60 + 10) = 50/70 = 5/7



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