Question

write a digit in blank space of each of the following no. so that the no. formed is divisible by 11: a)92_389 b)8_9484

Answer 1

                              sum of odd     sum of even         Difference

a) 928389                14                      17(+8)                         3 (11)                

b) 869484               8(+6)              25                              17 (11)

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