(30) संख्याओं की लॉटरी में (6) विजेता संख्याएं हैं। (6) संख्याओं के टिकट में ठीक (4) विजेता संख्याएं आने के कितने तरीके हैं?
In a lottery of (30) numbers, (6) numbers are winning numbers. How many (6)-number tickets contain exactly (4) winning numbers?
Explanation opens after your attempt
Correct Answer
C. (4140)
Concept
Choose (4) winning numbers and (2) numbers from the (24) non-winning numbers. The count is \(^{6}C_{4}\times{}^{24}C_{2}=4140\).
Why this answer is correct
The correct answer is C. (4140). Choose (4) winning numbers and (2) numbers from the (24) non-winning numbers. The count is \(^{6}C_{4}\times{}^{24}C_{2}=4140\).
Exam Tip
विजेता संख्याओं में से (4) और गैर-विजेता (24) में से (2) चुनें। संख्या \(^{6}C_{4}\times{}^{24}C_{2}=4140\)।
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