Simplify: `1/22+21/22`

Simplify: 21b-32+7b-20b

Find the Median for the following data 30, 17, 12, 21, 33, 22 Ascending order: 12, 17, 21, 22, 30, 33

Solve: 22.5-:1.5 =

IF 3A=[{:(1,2,2),(2,1,-2),(-2,2,-1):}] then show that A^-1=A' .

The coefficient of x^(5) in the expansion of (1 +x)^(21) +(1 + x)^(22) + . . . +(1+x)^(30) is

If in a frequency distribution, the mean and median are 21 and 22 respectively, then its mode is approximately

Find the coefficient of x^10 in the expansion of (1+2x)^21 + (1 + 2x)^22 +……+ (1+ 2x)^30

Find the values of tan22""1_(@)/2

Find the value of sin 22(1/2)^(@)

Find the values of tan 22(1/2)^(@)