Chp 1 to 9

Find the value of 9^((1)/(3)),9^((1)/(9)).9^((1)/(27))...up to oo

Show that 9^(1/(4)).9^(1/(8)).9^(1/(16).) . .."to" oo = 2

Prove that (1+cos pi/9) (1 + cos 3pi/9) (1+ cos 5pi/9) (1 + cos 7pi/9) =9/16 .

Which of the following will come next in the following sereis? 0 9 0 1 9 0 1 2 9 0 1 2 3 9 0 1 2 3 4 9 0 1 2 3 4 5 9 0 1 2 3 4 5

If sum_(i=1)^(9)(x_(i)-5)=9 and sum_(i=1)^(9)(x_(i)-5)^(2)=45 then the standard deviation of the 9 items x_(1),x_(2),......,x_(9) is

Find the value of ( 8^-1 - 9^-1 )^-1 ÷ ( 4^-1 - 9^-1 )^-1

The mode of the data 12, 1, 10, 1, 9, 3, 4, 9, 7, 9, is

The greatest positive integer k, for which 81^(k) + 1 is a factor of the sum 9^(350) + 9^(348) …… 9^(4) + 9^(2) + 1