यदि (Q(t)=100-4t), तो (Q(1)+Q(9)) किस एक (Q(k)) के दोगुने के बराबर है?
If (Q(t)=100-4t), (Q(1)+Q(9)) is equal to twice which (Q(k))?
Explanation opens after your attempt
B. (Q(5))
Concept
In a linear model, the midpoint of (1) and (9) is (5). Therefore (Q(1)+Q(9)=2Q(5)).
Why this answer is correct
The correct answer is B. (Q(5)). In a linear model, the midpoint of (1) and (9) is (5). Therefore (Q(1)+Q(9)=2Q(5)).
Exam Tip
रेखीय मॉडल में (1) और (9) का मध्य (5) है। इसलिए (Q(1)+Q(9)=2Q(5)) होता है।
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