Find AB, if `A=[6 9 2 3]`and `B=[2 6 0 7 9 8]`.

Find AB, if A=[[6,92,3]] and B=[[2,6,8]]

Verify (AB)^(-1)=B^(-1)A^(-1) for the matrices A and B where A=[{:(3,7),(2,5):}] and B=[{:(6,8),(7,9):}]

Verify (AB)^(-1)=B^(-1)A^(-1) for the matrices A and B where A=[{:(3,2),(7,5):}] and B=[{:(6,7),(8,9):}]

If A:B = 3:4 and B:C= 6:5 then A:(A+C) is: A. 9:11 B. 9:10 C. 9:19 D. 6:7

How many 7's are there in the following series which are not immediately followed by 3 but immediately preceded by 8 ? 8 9 8 7 6 2 2 6 3 2 6 9 7 3 2 8 7 2 7 7 8 7 3 7 7 9 4 1) 10 2) 3 3) 2 4) 0 5) None of these

What should come next in the following series? 9 8 7 6 5 4 3 2 1 9 8 7 6 5 4 3 2 9 8 7 6 5 4 3 9 8 7 6 5 4 9 8 7 ?

How many 9's are followed by and preceded by numbers divisible by 2? 8 9 6 5 3 5 9 6 8 3 4 9 6 5 2 6 9 7 37 2 9 4 1 3 7 9 4 1 7 3 4 9 8 4 5 3 97 6 1 5 31 95 7 4 2 9 6 8 5 3 2 9 5 7 4 8 9 4 5 1