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 Check what the result would have been if Sundaram had chosen the numbers shown below.

    Q4. 17

Answers (1)

best_answer

17 + 71 = 88 = 11*8 = a multiple of 11

this can be explained by 

(10a + b) + (10b + a) = 11a + 11b = 11 (a + b)

here a = 1 and b = 7

Posted by

Pankaj Sanodiya

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