यदि (3v-4, 4v+1, 6v-1) अंकगणितीय श्रेणी में हैं, तो (v) का मान क्या है?
If (3v-4, 4v+1, 6v-1) are in an arithmetic progression, what is the value of (v)?
Explanation opens after your attempt
C. (4)
Concept
From (2(4v+1)=(3v-4)+(6v-1)), (8v+2=9v-5), so (v=7). Use the twice-middle-term rule to find the variable.
Why this answer is correct
The correct answer is C. (4). From (2(4v+1)=(3v-4)+(6v-1)), (8v+2=9v-5), so (v=7). Use the twice-middle-term rule to find the variable.
Exam Tip
(2(4v+1)=(3v-4)+(6v-1)) से (8v+2=9v-5), इसलिए (v=7)। मध्य पद का दुगुना नियम लगाकर चर निकालें।
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