Answer: Option D
Explanation:
Here S = {TTT, TTH, THT, HTT, THH, HTH, HHT, HHH}
Let E = event of getting at most two heads.
Then E = {TTT, TTH, THT, HTT, THH, HTH, HHT}.
Answer: Option A
Total number of balls = (8 + 7 + 6) = 21.
n(E) = 7.
Here, S = {1, 2, 3, 4, ...., 19, 20}.
Let E = event of getting a multiple of 3 or 5 = {3, 6 , 9, 12, 15, 18, 5, 10, 20}.
Answer: Option B
Let number of balls = (6 + 8) = 14.
Number of white balls = 8.
Answer: Option C
Let S be the sample space.
Let E = event of getting all the 3 red balls.
Here, n(S) = 52.
Let E = event of getting a queen of club or a king of heart.
Then, n(E) = 2.
Clearly, there are 52 cards, out of which there are 12 face cards.
Let E = event of getting 1 spade and 1 heart.
Total number of balls = (2 + 3 + 2) = 7.
Let E = Event of drawing 2 balls, none of which is blue.
In two throws of a dice, n(S) = (6 x 6) = 36.
Let E = event of getting a sum ={(3, 6), (4, 5), (5, 4), (6, 3)}.
P(E) =