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Question

When a number is divided by 13, the remainder is 11, when the same number is divided by 17, the remainder is 9. What is the number ?

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Solution

Let c be the required number.
x=13p+11 and $$x = 17q + 9$
13p+11=17q+9
17q13p=2
q=(2+13p)17
Here, we can solve this question with normal process because there is two variable in it but one equation.
So, we will do it by putting different values of p.
The least value of p for q is a whole number is 26.
x=13×26+11=349

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