The value of `((3/5)^3-(2/5)^3)/((3/5)^2-(2/5)^2)` is `1/5` (b) `(19)/(25)` (c) `(21)/(25)` (d) `1`

The value of (1 1/7-2/3+(2/5)/(1-1/(25)))/(1-1/7[1/3+(2/5)/(1-2/5)]) is (a) 3/4 (b) (24)/(25) (c) 1 (d) 1 1/(24)

If a=(sqrt(5)+1)/(sqrt(5)-1) and b=(sqrt(5)-1)/(sqrt(5)+1), the value of ((a^(2)+ab+b^(2))/(a^(2)-ab+b^(2))) is (3)/(4) (b) (4)/(3)(c)(3)/(5)(d)(5)/(3)

2 3/5-:5/7=\ (13)/7 (b) (13)/(25) (91)/(25) (d) (25)/(91)

The value of {2-3(2-3)^(3)}^(3) is 5(b)125(c)(1)/(5)(d)-125

The value of 1^(2)+3^(2)+5^(2)+....+25^(2) is

4(12)/(125)3=?1(2)/(5)(b)1(3)/(5)(c)1(4)/(5)(d)2(2)/(5)

The value of 25-5[2+3{2-2(5-3)+5}-10]-:4

The value of 1^(2) + 3^(2) + 5^(2) + ..... + 25^(2) is

What is the value of (3)/(7) div (9)/(21) +2-(4)/(3)+(1)/(2)" of "(12)/(5) xx (25)/(18) div (5)/(9) ?