यदि (F(t)=50+rt) और (F(3)=F(11)-80), तो (r) क्या है?
If (F(t)=50+rt) and (F(3)=F(11)-80), what is (r)?
Explanation opens after your attempt
C. (10)
Concept
(F(11)-F(3)=8r). From (8r=80), (r=10).
Why this answer is correct
The correct answer is C. (10). (F(11)-F(3)=8r). From (8r=80), (r=10).
Exam Tip
(F(11)-F(3)=8r) है। (8r=80) से (r=10) मिलता है।
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