Evaluate :

`( -2/5 )^7 div ( -2/5 )^5` is equal to

(5/7)^4 xx (7/5)^2 is equal to

(2 ^(-5) div 2 ^(-2))= ?

Evaluate: 34/7 div 5

(5^7div5^2)xx(3^6div3^2) is equal to

Evaluate : ( -5/ 7 ) times [ 2/5 + ( -4/7 ) ] = ( -5/7 ) times 2/5 + --- times ( -4/7 )

Evaluate: 6""5/12 div 1""7/36

The value of ((7)/(8) div 5(1)/(4) xx 7(1)/(5) - (3)/(20) " of " (2)/(3)) div (1)/(2) + ((3)/(5) xx 7(1)/(2) + (2)/(3) div (8)/(15)) is equal to 7+k , where k =