यदि \(A=\{1,2,3\}\), \(B=\{1,2,3,4\}\) और \(S=\{(a,b):b>a+1\}\) है, तो \(S\subseteq A\times B\) में कितने अवयव हैं?
If \(A=\{1,2,3\}\), \(B=\{1,2,3,4\}\), and \(S=\{(a,b):b>a+1\}\), how many elements are in \(S\subseteq A\times B\)?
Explanation opens after your attempt
B. (3)
Concept
For (a=1), (b=3,4); for (a=2), (b=4), giving total (3). Apply the condition to each first component.
Why this answer is correct
The correct answer is B. (3). For (a=1), (b=3,4); for (a=2), (b=4), giving total (3). Apply the condition to each first component.
Exam Tip
(a=1) पर (b=3,4) और (a=2) पर (b=4) मिलता है, कुल (3)। शर्त को प्रत्येक पहले अवयव पर लगाएँ।
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