[" 12.यदि किसी "A.P." का "d=5" और "S_(9)=75" तो "a_(9)" क्या होगा ? "],[[" (i) "85," (ii) "85/2," (iii) "83/3," (iv) कोई नहीं "]]

In an AP : given d = 5, S_(9) = 75 , find a and a_(9) .

Find the value of : (i) 2^6 (ii) 9^3 (iii) 11^2 (iv) 5^4

(i) 4/5+2/4 (ii) 7/9+5/3+7/9 (iii) 5/6+3/2+7/2 (iv) 7/3+9/2+5/6

Find the value of : ( i ) 2^(6) (ii) 9^(3) (iii) 11^(2) (iv) 5^(4)

Show the following on number lines. i) 7/6 , ii) 5/2 iii) 7/5 iv) 9/6

Find the value of i) 2^6 ii) 9^3 iii) 11^2 iv) 5^3

In an AP: (i) given a=5, d=3, a_(n)=50 , find n and S_(n) . (ii) given a=7, a_(13)=35, find d and S_(13) (iii) given a_(12)=37, d=3 , find a and S_(12) (iv) given a_(3)=15, S_(10)=125 , find and a_(10) . (v) given d=5, S_(9)=75 and a and a_(9) . (vi) given a=2, d=8, S_(n)=90 , find n and a_(n) . (vii) given a=8, a_(n)=62, S_(n)=210 . find n and d. (viii) given a_(n)=4, d=2, S_(n) = -14, find n and a. (ix) given a_(n)=3, n=8, S_(n)=192, find d. (x) Given l=28, s=144 and there are total 9 terms find a.

Find (i) 1/2 of (ii) (2) 3/4 (iii) (4) 2/9 (iv) 5/8 of (v) (3) 5/6 (ii) (9) 2/3