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Exam Questions Papers - Engineering

Q1:

In x = the value of x is

A 10

B 25

C 36

D 44

ANS:D - 44

= (10)2 + (10)3 + ... + (10)8 + (10)9 = (2)10 + (3)10 + .... + (8)10 + (9)10 = 2 + 3 + ... + 8 + 9 = 44.