" (ii) "i^(-38)

Evaluate : (i) (2^(38) + 2^(37) + 2^(36))/(2^(39) + 2^(38) + 2^(37)) (ii) [(64^((1)/(2)))^((1)/(6))]^(2)

If n (xi)=50, n (A)=38, n(B)=30 then the least value of n(AnnB) is (i) 30 (ii) 38 (iii) 50 (iv) 18

Which of the two rational numbers in each of the following pairs of rational numbers is smaller? (i) (-4)/3,8/(-7) (ii) (-12)/5,\ -3

Which of the following can not be the probability of an event? (i) (2)/(7) (ii) 3.8 (iii) 37% (iv) -0.8 (v) 0.8 (vi) (-2)/(5) (vii) (7)/(8)

Simplify : i^(38)

Convert each of the following into a mixed fraction: (i) 38/7 (ii) 47/15 (iii) 189/16

Write the following decimals as fractions. Reduce the fractions to lowest form: (i) 3.8 (ii) 21.2 (iii) 6.4 (iv) 1.0

Solve the following : (i) 38% (ii) 25% (iii) 66.66%

Show that : (i) t a n" "48o" "t a n" "23o" "t a n" "42o" "t a n" "67o" "=" "1(i i) cos" "38o" "cos" "52o" "" "s in" "38o" "s in" "52o" "=" "0

Find the value of: (i)tan90^@ (ii) cos38^@cos52^@-sin38^@sin52^@