\(A=\{1,2,3,4\}\) पर \(R=\{(a,b):a+b\le5\}\) है। (R) में कितने युग्म हैं?

On \(A=\{1,2,3,4\}\), \(R=\{(a,b):a+b\le5\}\). How many pairs are in (R)?

Explanation opens after your attempt
Correct Answer

C. (10)

Step 1

Concept

For (a=1,2,3,4), the possible counts of (b) are (4,3,2,1). Total pairs are (4+3+2+1=10).

Step 2

Why this answer is correct

The correct answer is C. (10). For (a=1,2,3,4), the possible counts of (b) are (4,3,2,1). Total pairs are (4+3+2+1=10).

Step 3

Exam Tip

(a=1,2,3,4) के लिए (b) की संख्याएं क्रमशः (4,3,2,1) हैं। कुल (4+3+2+1=10) युग्म हैं।

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\(A=\{1,2,3,4\}\) पर \(R=\{(a,b):a+b\le5\}\) है। (R) में कितने युग्म हैं? / On \(A=\{1,2,3,4\}\), \(R=\{(a,b):a+b\le5\}\). How many pairs are in (R)?

Correct Answer: C. (10). Explanation: (a=1,2,3,4) के लिए (b) की संख्याएं क्रमशः (4,3,2,1) हैं। कुल (4+3+2+1=10) युग्म हैं। / For (a=1,2,3,4), the possible counts of (b) are (4,3,2,1). Total pairs are (4+3+2+1=10).

Which concept should I revise for this Mathematics MCQ?

For (a=1,2,3,4), the possible counts of (b) are (4,3,2,1). Total pairs are (4+3+2+1=10).

What exam hint can help solve this Mathematics question?

(a=1,2,3,4) के लिए (b) की संख्याएं क्रमशः (4,3,2,1) हैं। कुल (4+3+2+1=10) युग्म हैं।