" 1.If "(3+5+7+cdots+n)/(5+8+11+cdots+10" terms ")=7;" then the value of "

If (3+5+7+ . . . .+"n terms")/(5+8+11+ . . .. +"10 terms")=7 , then the value of n, is

If (3+5+7+... upto n terms )/(5+8+113... upto 10 terms )=7, then find the value of n.

if (3 +5+7+9+…. " up to 35 terms " )/(5+8+11+ …. " up to n terms ")=7 , find the value of n.

if (3+5+7...n terms)/(5+8+11+...10 terms)=7 find n.

If 2^(x+3) cdot 2^((2)(2x - 5)) = 2^(3x + 7) , then the value of x is :

Let t_(n) , n = 1,2,3,cdots be the n^(th) term of the A.P. 5,8,11, cdots . Then the value of n for which t_(n) = 305 is

If C_(p) = 6.85 cal cdot mol^(-1) cdot^(@)C^(-1) , C_(v) = 4.87 cal cdot mol^(-1) cdot^(@)C^(-1) and R = 8.31 xx 10^(7) erg cdot mol^(-1) cdot^(@)C^(-1) , then find out the value of J.