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

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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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