Total number of hats = 6 + 4 + 2 + 4 = 16 Let S be the sample space. Then, n(S) = number of ways of drawing 2 hats out of 16 = ¹⁶C₂ = (16 × 15)/( 2 × 1) = 120 Let E= event of drawing all the hats are of green colour n(E) = ²C₂ = 1 ∴ P (E) = (n(E))/(n(S)) = 1/120
In a class, all the students are standing in a row. If a particular student is 18th from both the ends, how many students are there in the cl...
In a row A is 13th from the left and B is 16th from the right, after interchanging their positions A becomes 27th from the left. Find the total no of pe...
Who among the following is the third lightest person?
How many persons are younger than H?
Six persons P, Q, R, S, T, and U have different number of marks with them. S has more marks than T, who has more marks than U. R has more marks than S. ...
Raju is 11th to the left of Shyam who is 28th from the left end of a row of 40 students. Then what will be Raju’s position from ...
How many boxes are heavier than box P?
Five boys U, V, W, X and Y are sitting in a row facing north. Each one has a different weight. The one who is second heaviest has a weight of 44 kg. U ...
T is taller than V who is shorter than U. W is taller than X but shorter than V. U is shorter than T. Who is the tallest?
Which box is the heaviest?
