`(2'2/5) (1'2/3) = "____"`

Find the n^(th) term of the H.P. (1)/(2), (2)/(5), (1)/(3) , (2)/(7) ...

The value of (1/4div1/2(2/5-1/3))/(1(2)/(3)"of"3/4-1/4"of"2/3) is :

Statement (I): 5+(1/2+2/3)=(5+1/2)+2/3 is the association under addition . Statement (A) : (-3)xx(+5)=+12 . Statement (M) : ((-101))/((-2018))=(-101)/2018

Express [(3,-1,0),(2,2,5),(1,3,2)] as sum of a symmetric and a skew symmetric matrix.

If A' = [(2,5),(2,1),(-3,2)], B = [(2,-1,-2),(4,0,5)] and [(4,5,2),(0,1,4)] find A + B and B -C , show that A + (B -C) = (A + B) - C .

Find the sum of the series, (1^(2))/(3)+(1^(2)+2^(2))/(5)+(1^(2)+2^(2)+3^(2))/(7)+.. upto n th term.

What will come in place of question mark (?) . 2 1/2 - 5 2/3 + 1 1/5 div 1 1/5 = ?