`5/7xx5/7xx5/7xx5/7xx5/7xx5/7`

(-5/7)xx(-5/7)xx(-5/7)xx(-5/7)

(-5/7)xx(-5/7)xx(-5/7)xx(-5/7)

Express each of the following in exponential form: (i) (-5)xx(-5)xx(-5) (ii) (-5)/7xx(-5)/7xx(-5)/7xx(-5)/7 (iii) 4/3xx4/3xx4/3xx4/3xx4/3

-7/3xx-7/3xx-7/3xx-7/3xx-7/3

(1/3xx1/5)/(1/3xx1/5+1/3xx1/6+1/3xx1/7)

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

Find the sum of infinite series (1)/(1xx3xx5)+(1)/(3xx5xx7)+(1)/(5xx7xx9)+….

Explain why 7xx11xx13+13 and 7xx6xx5xx4xx3xx2xx1+5 are composite numbers.

Simplify: ((13)/9xx(-15)/2)+\ (7/3xx8/5)+(3/5xx1/2)

Simplify: (i) (12^4xx9^3xx4)/(6^3xx8^2xx27) (ii) (25xx5^2xxt^8)/(10^3xxt^4) (iii) (3^5xx10^5xx25)/(5^7xx6^5)