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In each of the following questions, select the related word/letters/number/figure from the alternatives. 10 : 99 :: ?

A6 : 37

B7 : 45

C8 : 63

D9 : 85

Answer:

C. 8 : 63

Read Explanation:

(10)^2= 100 100 – 1 = 99 Similarly, (8)^2= 64 64 – 1 = 63


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