defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Permutations and Combinations

x1 + x2 + x3 + x4 = 30 (x1, x2, x3, x4 विषम प्राकृत संख्याएँ हैं) के हलों की संख्या है:

1
420
2
560
3
750
4
1024
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