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please solve it . i have nata entrance tommoro .please solve it it is important

please solve it  . i have nata entrance tommoro .please solve it it is important 

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Grade:12

2 Answers

Samyak Jain
333 Points
5 years ago
Let the number be t . When it is divided by 72, the remainder is 10. 
\therefore t = 72m + 10   ,  where m \epsilon W.
Now t is divided by 9, i.e., 
(72m + 10) / 9  =  72m / 9  +  10 / 9 
72m is divisible by 9, so there is no remainder in this case.
But 10 is not divisible by 9, so there is remainder 1 in this case.
Ans.   1  
Dev Tube
31 Points
5 years ago
Let the number being divided be x, then x=72q+10 where q is the quotient.When x is divided by 9,x/9 = (72q+10)/9x/9=8q+10/9.72q leaves no remainder when it is divided by 9 but 10 will leave a remainder 1.Therefore answer is 1.

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