1.

D is a real number with non –terminating digits after the decimal point. D = 0.a1 a2 a1 a2 a1 a2…..with a1 u0026 a 2 not both zero. Which of the following when multiplied by D will necessarily give an integer?

A. 18
B. 198
C. 100
D. 288
Answer» C. 100


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