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Permutations and Combinations question

2023 · 25 Jan · Shift 1 · Q41
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Permutations and Combinations question

2023 · 25 Jan · Shift 1 · Q41

JEE MainMathematicsPermutations and CombinationsNumerical+4 / −1
Let xxx and yyy be distinct integers where 1≤x≤251 \le x \le 251≤x≤25 and 1≤y≤251 \le y \le 251≤y≤25. Then, the number of ways of choosing xxx and yyy, such that x+yx+yx+y is divisible by 5, is ‾\underline{\hspace{2cm}}​.
Numerical answer
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