1. Sum of n terms the series: a.2 + 22 † 222 + 2222 + 9th term
b.0.3+ 0.33 + 0.333+ upto nth term

Step-by-step explanation:

a. 246,913,578

2+22+222+2,222+22,222+222,222+2,222,222+22,222,222+222,222,222

b. 0.3+0.33+0.333+0.3333+0.33333+0.333333+0.3333333+0.33333333+0.333333333 =2.962962963

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

9x