Given `a = 1 5/7, b=1/4, c=1/9` and `d =-1 1/4` , then the value of `(a (b-c))/d` is

If a^(3) = 1 + 7 , 3^(3) = 1 + 7 + b, 4^(4) = 1 + 7 + c , then the value of a + b + c is

If a^(3) = 1 + 7, 4^(2) = 1 + 5 + b , 5^(3) = 1 + 8 + c , then the value of a + b + c is

Six numbers a , b , c , d , e ,f are such that a b=1, b c=1/2, c d=5, d e=2 a n d ef=1/2dot What is the value of (a d : b e : cf)? 4:3: 27 b. 6:1:9 c. 8:9:9 d. 72 :1:9

If a^(3) =1+7, 3^(3) = 1+7+b, 4^(3) = 1+7 +c , then the value of a+ b+ c is

If a+ b+c + d = 4 then the value of 1/((1-a) (1-b) (1-c)) + 1/((1-b) (1-c) (1-d)) + 1/((1-c)(1-d)(1-a)) + 1/((1-d)(1-a) (1-b)) is