If `(5+9+13+\ ddotto\ n\ t e r m s)/(7+9+11+\ ddotto\ (n+1)t e r m s)=(17)/(16)` , then `n=` (a) 8 (b) 7 (c) 10 (d) 11

If (5 + 9 + 13 + .... rarr nterms) / (7 + 9 + 11 + ... rarr (n + 1) terms) = (17) / (16), then n =

If (5+9+13+...... n terms)/( 7 + 9 + 11 +....(n+1) terms) = 17/16 , then n=

If (3+5+7+ u p tont e r m s)/(5+8+11+ u p to10t e r m s)=7, then find the value of ndot

If x : y=1:1,\ t h e n\ (3x+4y)/(5x+6y)= (a) 7/(11) (b) (17)/(11) (c) (17)/(23) (d) 4/5

If x : y=1:1,\ t h e n\ (3x+4y)/(5x+6y)= (a) 7/(11) (b) (17)/(11) (c) (17)/(23) (d) 4/5

If the coefficients of rth, (r+1)t h ,a n d(r+2)t h terms in the expansion of (1+x)^(14) are in A.P., then r is/are a. 5 b. 11 c. 10 d. 9

If the coefficients of rth, (r+1)t h ,a n d(r+2)t h terms in the expansion of (1+x)^(14) are in A.P., then r is/are a. 5 b. 11 c. 10 d. 9

If the m^(t h) term of an A.P. is 1/n a n d\ t h e\ n^(t h)t e r m\ i s1/m ,\ show that the sumof m n terms is 1/2(m n+1) where m!=ndot

Find the sum of the following series: 9+99+999+ to\ n\ t e r m s

If 2/3A=75 % of B , t h e n A : B is 1:1 b. 9:8 c. 8:9 d. 10 : 11