If A={2,3} B={4,5} then A X B is equal to

If A={1,2,3,4,5,6) and B={2,4,5,6,8,9,10} then A DeltaB is equal to

In triangle A B C , if r_1=2r_2=3r_3, then a : b is equal to 5/4 (b) 4/5 (c) 7/4 (d) 4/7

If A and B are two independent events with P(A) = 3/5 and P(B) =4/9 then P(A cap B) is equal to: a) 4/15 b) 8/45 c) 1/3 d) 2/9

Let A+2B=[{:(2,4,0),(6,-3,3),(-5,3,5):}] and 2A-B=[{:(6,-2,4),(6,1,5),(6,3,4):}] , then tr (A) - tr (B) is equal to (where , tr (A) =n trace of matrix x A i.e. . Sum of the principle diagonal elements of matrix A)

Let A=[(1, 2), (3,-5)] and B=[(1, 0), (0, 2)] and X be a matrix such that A=B X , then X is equal to (a) 1/2[(2, 4), (3, -5)] (b) 1/2[(-2, 4), (3, 5)] (c) [(2, 4), (3,-5)] (d) none of these

If A={:[(1,2,3),(-2,5,7)]:}and2A-3B={:[(4,5,-9),(1,2,3)]:} then B is equal to

The plane containing the line (x-3)/(2)=(y-b)/(4)=(z-3)/(3) passes through the points (a, 1, 2), (2, 1, 4), (2, 3, 5) , then 3a+5b is equal to

Let A=[{:(x^(2),6,8),(3,y^(2),9),(4,5,z^(2)):}],B=[{:(2x,3,5),(2,2y,6),(1,4,2z-3):}] . If trace A = trace B, then x+y+z is equal to ________

Let A,B, and C be three sets such that A={(x,y)|(x)/(cos theta)=(y)/(sintheta)=5,"where" 'theta'"is parameter"} B= {(x,y)|(x-3)/(cos phi)=(y-4)/(sin phi)=r} C= { (x,y)|(x-3)^(2)+(y-4)^(2)leR^(2)} If phi is fixed and r varies and (A cap B) =1 , then sec phi is equal to (a) (5)/(4) (b) (-5)/(4) (c) (5)/(3) (d) (-5)/(3)

If f(x) =x^4-8x^3+4x^2+4x+39 and f (3 + 2i) = a + ib then a : b is equal to