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1. The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one of the numbers is 275, then the other is:

A. 279

B. 283

C. 308

D. 318

Solution:

\begin{aligned} Other number \\ = \frac{11 \times 7700}{275} \\ = 308 \end{aligned}

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