यदि \(A=\{1,2,3,4,5\}\) और \(R=\{(a,b):b=5\}\) है, तो (R) में कितने pairs होंगे?
If \(A=\{1,2,3,4,5\}\) and \(R=\{(a,b):b=5\}\), how many pairs will be in (R)?
Explanation opens after your attempt
B. (5)
Concept
The second component is fixed as (5), and the first component can take (5) values from (A). Hence there will be (5) pairs.
Why this answer is correct
The correct answer is B. (5). The second component is fixed as (5), and the first component can take (5) values from (A). Hence there will be (5) pairs.
Exam Tip
दूसरा घटक (5) fixed है और पहला घटक (A) के (5) मान ले सकता है। इसलिए (5) pairs होंगे।
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