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

State whether each of the following statements are true or false. If the statement is false, rewrite the given statement correctly. (i) If P= {m, n} and Q = {n, m}, then P xx Q= {(m, n),(n, m)}. (ii) If A and B are non-empty sets, then A xx B is a non-empty set of ordered pairs (x, y) such that x in A and y in B. (iii) If A={1,2}, B={3,4} then A xx (B cap phi)=phi

Add: p(p-q),q(q-r) and r(r-p)

T_p,T_q,T_r are the pth , qth and rth terms of an A.P., then |(T_p,T_q,T_r),(p,q,r),(1,1,1)| equals :

If A={p,q,r} and B={q,p,r}. Then check whether A=B or not.

If, p,q,r are negative distinct real numbers , then the determinant Delta=|(p,q,r),(q,r,p),(r,p,q)| is :

If P(1,2), Q(4,6), R(5,7) and S(a, b) are the vertices of a parallelogram P Q R S , then

|(b+c, q+r, y+z),(c+a,r+p,z +x),(a+b,p+q,x+y)|=2|(a,p,x),(b,q,y),(c,r,z)|

Using the property of determinants and without expanding {:|( b+c,q+r,y+z),( c+a,r+p,z+x),( a+b,p+q,x+y) |:}=2 {:|(a,p,x),( b,q,y),(c,r,z)|:}

The number of proper divisors of 2^(p)*6^(q)*21^(r),AA p,q,r in N , is