समीकरण (x+y+z=10) के अऋण पूर्णांक हलों की संख्या कितनी है यदि \(x\leq3\) हो?
How many non-negative integer solutions does (x+y+z=10) have if \(x\leq3\)?
Explanation opens after your attempt
C. (38)
Concept
There are \(^{12}C_{2}=66\) total solutions. Subtract \(^{8}C_{2}=28\) cases with \(x\geq4\) to get (38).
Why this answer is correct
The correct answer is C. (38). There are \(^{12}C_{2}=66\) total solutions. Subtract \(^{8}C_{2}=28\) cases with \(x\geq4\) to get (38).
Exam Tip
कुल \(^{12}C_{2}=66\) हल हैं। \(x\geq4\) वाले \(^{8}C_{2}=28\) घटाने पर (38) मिलते हैं।
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