What was the approximate number of mobile cellular subscriptions per 100 people in zimbabwe in 2003?

ok, Let's suppose there are X = 1000000 total population on Zimbabwe, and Y= 50000 mobile subscriptions.

then Y/X= 50000/1000000 = 0,05

if we multiply this number for 100 we get 5%.

this means that 5% of the population on Zimbabwe has a mobile, or 5 subscribers per 100 people.

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