(i) `1/5xx(-7/1xx6/11)`

Simplify: (i) ((13)/9xx(-15)/2)+(7/3xx8/5)+(3/5xx1/2) (ii) (3/(11)xx5/6)-(9/(12)xx4/3)+(5/(13)xx6/(15))

Using appropriate properties find. (i) - 2/5 xx 3/5 + 5/2 - 3/5 xx 1/6 (ii) 2/5 xx (-3/7) - 1/6 xx 3/2 + 1/14 xx 2/5

Find the product: (i) 9/2 xx ((-7)/4) (ii) 3/(10) xx (-9) (iii) (-6)/5 xx 9/(11) (iv) 3/7 xx ((-2)/5) (v) 3/(-5) xx (-5)/3

If 1-1/3+1/5-1/7+1/9-1/(11)+=pi/4 , then value of 1/(1xx3)+1/(5xx7)+1/(9xx11)+ is pi//8 b. pi//6 c. pi//4 d. pi//36

Find the following products : (i) (-4)xx7xx(-11) (ii) 5xx(-4)xx(-7)xx(-8) .

Find the product 7(1)/(4)xx7/58xx1(11)/(21)

( 7) xx(-5)xx(-8)xx(-1)

( 7) xx(-5)xx(-8)xx(-1)

( 7) xx(-5)xx(-8)xx(-1)

( 7) xx(-5)xx(-8)xx(-1)