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A positive integer n when divided by 9 gives 7 as a remainder. What will be the remainder when (3n-1) is divided by 9??
A positive integer n when divided by 9 gives 7 as a remainder. What will be the remainder when (3n-1) is divided by 9??
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HELLO DEAR,GIVE THAT :-
A POSITIVE INTEGER n WHEN DIVIDED By 9 GIVES 7 As A REMAINDER
let a be the quetient
N = 9a +7
3n-1 is divided by 9
now, 3n-1= 3(9a+7)-1
b=27a + 21-1
=27a +20 = 27 a + 18 + 2
= 9( 3a + 6) + 2 when divided by 9
Remainder = 2.
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