If P = {a, b,c } and Q= {r}, form the sets `P xx Q` and `QxxP`. Are these two Products equal ?

If P = {1, 2}, form the set P xx P xx P .

If A = { a, b,c}, B = {p,q}, find BxxA .

Let P = {1, 4,9} and Q= {2,4,6}. Write the elements of (P nn Q)xx (P uu Q) . Also find (P xx Q) nn (Q xx P) .

If a,b,c are in AP and p is the AM between a and b and q is the AM between b and c, then show that b is the AM between p and q.

Find the product: (p+3q) (3p-q)

If A xx B = {(p, q), (p, r), (m, q),(m, r)} , find A and B.

If a,b,c and p,q,r are reciprocal systemm of vectors, then axxp+bxxq+cxxr is equal to

There are two sets A and B each of which consists of three numbers in GP whose product is 64 and R and r are the common ratios sich that R=r+2 . If (p)/(q)=(3)/(2) , where p and q are sum of numbers taken two at a time respectively in the two sets. The value of r^(R)+R^(r) is

If the roots of the equation 1/ (x+p) + 1/ (x+q) = 1/r are equal in magnitude but opposite in sign, show that p+q = 2r & that the product of roots is equal to (-1/2)(p^2+q^2) .

Let A = {p, q, r,s}, B = {p, q, r} and C = {q, s}. Find all sets X such that : X sub A and X cancel (sub) B .