A has 'a' rows and 'a+3' columns. B has 'b' rows and '17-b' columns, and if both products AB and BA exists, find a, b?

Matrix A ha s m rows and n+ 5 columns; matrix B has m rows and 11 - n columns. If both AB and BA exist, then (A) AB and BA are square matrix (B) AB and BA are of order 8 xx 8 and 3 xx 13 , respectively (C) AB=BA (D) None of these

Match the items given in columns A and B :

Match the terms in column I with suitable terms in column II and choose the correct answer from A,B,C, and D

In garden, there are some rows and columns. The number of trees in a row is greater than that in each column by 10. Find the number of trees in each row if the total number of trees are 200.