यदि \(A=\{1,2,3,4\}\) और \(B=\{2,4,6\}\), तो \(A\times B\) में \(a\mid b\) को संतुष्ट करने वाले युग्मों की संख्या कितनी है?
If \(A=\{1,2,3,4\}\) and \(B=\{2,4,6\}\), how many pairs in \(A\times B\) satisfy \(a\mid b\)?
Explanation opens after your attempt
Correct Answer
D. (8)
Concept
For (a=1) there are (3), for (a=2) there are (3), for (a=3) there is (1), and for (a=4) there is (1). Total is (8), so test each first coordinate separately.
Why this answer is correct
The correct answer is D. (8). For (a=1) there are (3), for (a=2) there are (3), for (a=3) there is (1), and for (a=4) there is (1). Total is (8), so test each first coordinate separately.
Exam Tip
(a=1) पर (3), (a=2) पर (3), (a=3) पर (1), और (a=4) पर (1) युग्म मिलते हैं। कुल (8) है, इसलिए प्रत्येक पहले निर्देशांक को अलग जांचें।
Login to save your score, XP, coins and progress.