Question

a positive integer n when divided by 9gives 7 as remainder what be the remainder when 3n-1 is divided by 9​

Answer 1

Answer:

2

Step-by-step explanation:

if 9 is divided by n then remainder = 7

let assume quotient as - p

dividend = n

dividend = divisor×quotient+remainder

dividend = 9p+7

lets assume p as 1

so, 9×1+7

= 16

now we have - 3n-1 ÷ 9

So, 3 × 16 - 1

= 47

47 ÷ 9

remainder = 2

hence, 2 is the answer..