" Q.25.Evaluate: i) "2^(55)times2^(60)-2^(97)times2^(18)

Evaluate: [(-2) times (7)]-[(-7) times 2]

Evaluate: 42 times (-97)

Evaluate each of the following: (i)\ 2^(55)xx\ 2^(60)-\ 2^(97)xx\ 2^(18) (ii)\ (2/3)^2xx\ (2/5)^(-3\ )xx\ (3/5)^2

Evaluate each of the following: 2^(55)x2^(60)-2^(97)x2^(18)((2)/(3))^(2)x((2)/(5))^(-3)x((3)/(5))^(2)

Simplify: (i) 2^(55)xx2^(60)-2^(97)xx2^(18) (ii) 2^3xxa^3xx5a^4 , (iii) (3^n+3^(n+1))/(3^(n+1)-3^n), Where n is a natural numbers.

Evaluate: a. (12 times (-15) times (24))/((-3) times 5) b. 90 times (-4) +405 div [110-{25-(25 times2)}]

Evaluate: (-2) times (-2) times (-2) times (-2) times (-2) times (-2)

Evaluate : (-1/2) times (-1/2 ) times ( -1/2 ) times (-1/2) times (-1/2 ) times ( -1/2 )

Evaluate : ( 2^(-4) times (-3 )^2 times ( 4 )^4 )/ ( 2^2 times ( 3 )^2 times ( 1/2 )^(-2 ) )

Evaluate [i^(18)+(1/i)^(25)]^(2) .