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Question

If m=138 and n=13+8, Find mn

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Solution

We are given m=138 and n=13+8 and we find the product mn as shown below:

mn=(138)(13+8)=1(38)(3+8)=1(3)2(8)2((ab)(a+b)=a2b2)=198
=11=1

Hence, mn=1.

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