Question

an integer when divided by 9 gives 7​

Answer 1

63 is the answer. ......

Answer 2

Heya mate..!!

here's your answer..!!

Sol: Given A positive integer n is divided by 9 gives 7 as the remainder. Let a be quotient n = 9a+7 3n-1 is divided by 9 now, 3n-1= 3(9a+7)-1 =27a + 21-1 =27a +20 = 27 a + 18 + 2 = 9( 3a + 6) + 2 when divided by 9 Remainder = 2.

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