In how many ways can a delegation of 3 be chosen from amo...
In how many ways can a delegation of 3 be chosen from among 5 men and 3 women, if at least one man and at least one woman must be included?
15
28
30
45
Correct answer is D
No of ways of choosing 1 man, 2 women = 5C1 x 3C2
No of ways of choosing 2 men, 1 woman = 5C2 x 3C1
Summing, => (5C1 x 3C2) + (5C2 x 3C1) = 15 + 30 = 45
If the function f(fx) = x3 + 2x2 + qx - 6 is divisible by x + 1, find q...
If (g(y)) = y−311 + 11y2−9. what is g(y + 3)?...
Solve the pair of equation for x and y respectively \(2x^{-1} - 3y^{-1} = 4; 4x^{-1} + y^{...
In the diagram, ¯YW is a tangent to the circle at X, |UV| = |VX| and < VXW = 50o. Find t...
If U = {x : x is an integer and 1 ≤ x ≤ 20 E1 = {x : x is a multiple of 3} E2 = {x :...