Complementary Events

Q.

Compute the probability of the occurrence of an event if the probability the event not occurring is 0.56.

Q.

The probability of guessing the correct answer to certain test questions is $\frac{y}{4}$. If the probability of not guessing the correct answer to these questions is $\frac{3}{4}$, then the value of y is:

1. 1

2. 0

3. $\frac{1}{2}$

4. $\frac{1}{4}$

Q.

If the probability of a quadrilateral being a square is 0.4 then the probability of the quadrilateral not being a square is ___.

1. 1

2. 0.5

3. 0.6

4. 0.4

Q.

If $P\left(A\right)$ and $P\left(\overline{A}\right)$ are complementary events and $P\left(A\right)$ = 0.15, then $P\left(\overline{A}\right)$= ?

1. 0.35

2. 0.3

3. -0.15

4. 0.85

Q. A game consists of tossing a ₹5 coin twice and noting down its outcomes. Jesika wins if she gets exactly one head. What is the probability that she will lose the game?

1. $\frac{1}{4}$
2. $\frac{1}{2}$
3. $\frac{3}{4}$
4. $\frac{2}{3}$

Q. A game consists of tossing a ₹5 coin twice and noting down its outcomes. Jesika wins if she gets exactly one head. What is the probability that she will lose the game?

1. $\frac{1}{4}$
2. $\frac{1}{2}$
3. $\frac{3}{4}$
4. $\frac{2}{3}$

Q. The probability of a certain event is always 1.

1. False
2. True

Q. The probability of a certain event is always 1.

1. False
2. True