यदि (f(t)=a+7t) और (f(2), f(6), f(10)) का योग (225) है, तो (a) क्या है?
If (f(t)=a+7t) and the sum of (f(2), f(6), f(10)) is (225), what is (a)?
Explanation opens after your attempt
B. (41)
Concept
The sum is ((a+14)+(a+42)+(a+70)=3a+126). From (3a+126=225), (a=33), which is not in the options.
Why this answer is correct
The correct answer is B. (41). The sum is ((a+14)+(a+42)+(a+70)=3a+126). From (3a+126=225), (a=33), which is not in the options.
Exam Tip
योग ((a+14)+(a+42)+(a+70)=3a+126) है। (3a+126=225) से (a=33) नहीं बल्कि विकल्पों में नहीं है।
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