यदि \(A=\{1,2,3,4,5\}\) और \(B=\{0,1\}\) हों तो (A) से (B) में ऐसे कितने फलन हैं जिनमें (f(1)+f(2)+f(3)+f(4)+f(5)=2) हो?
If \(A=\{1,2,3,4,5\}\) and \(B=\{0,1\}\), how many functions from (A) to (B) satisfy (f(1)+f(2)+f(3)+f(4)+f(5)=2)?
Explanation opens after your attempt
Correct Answer
B. (10)
Concept
Exactly two of the five positions must have value (1). The count is \(\binom{5}{2}=10\).
Why this answer is correct
The correct answer is B. (10). Exactly two of the five positions must have value (1). The count is \(\binom{5}{2}=10\).
Exam Tip
पांच स्थानों में ठीक दो स्थानों पर मान (1) होना चाहिए। संख्या \(\binom{5}{2}=10\) है।
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