JEE MATHEMATICS MCQ: COMBINATIONS

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Application +4 | -1

The number of integral solution of the inequality

4 < x_1+x_2+x_3+x_4 < 9

where

x_1, x_2, x_3, x_4 \geq 0

View answer and explanation

Correct option: C

425

The correct answer is C (425) because it is the number of integral solutions to the inequality, calculated by subtracting the number of solutions less than or equal to 4 from the number of solutions less than 9.

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