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Question

Find the value of 138187+176165+152 .

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Solution

138×3+83+8=3+898

=3+8

187×8+78+7=8+787

=8+7

Similarly, by rationalising we get

176=7+6

165=6+5

and 152=5+2

So, 138187+176165+152

=3+8(8+7)+(7+6)(6+5)+(5+2)

=3+887+7+665+5+2

= 5


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