If `S=1/(1xx3xx5)+1/(3xx5xx7)+1/(5xx7xx9)+ddot` to infinity, then find the value of `[36 S]` , where [.] represents the greatest integer function.

1/7 xx 1/3 + 1/5 xx 10/3 - 5/6

(1)/(3)xx(5)/(7)xx(5)/(11) "of" ?=325

If 9 xx 3 = 36, 11 xx 7 = 81 , then What is the value of 5 xx 13?

1xx3xx5xx7xx9xx...xx(2n-1)=

2/5 xx (-3)/7 + 1/(14) xx 2/5

2/5xx?xx 1 1/3 = 7/15

If A is a matrix of order [x-1]xx3 and B is matrix of order 3xx[y-2] where [1] represent greatest integer function,such that AB is a matrix of order 4xx5 then