Question 83

The remainder when 73 x 79 x 81 is divided by 11 is

Solution

Principle used to solve :Rem (A x B) = Rem. (A) x Rem. (B)

A/q

When divided by 11

Rem. (73 x 79x 81) = Rem. (73) x Rem.(79) x Rem.(81)

Rem. (73) = 7

Rem. (79) = 2

Rem. (81) = 4

So Rem. (73 x 79x 81) = Rem (7 x 2 x 4) = Rem (56) = 1

Hence Remainder =1 Answer

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