Question

on diving a positive integer n by 9 we get 7 as remainder remainder will be 3n-1 is divided by 9​

Answer 1

Answer:

answer of this question is two

Answer 2

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.