Impossible Events

Q. The probability of getting neither a head nor a tail in a single throw of a coin is ____.

1. 1
2. 0
3. 1/2
4. 0.99

Q. The probability of a coin falling in the red region is ____ .

1. 0.25
2. 0.75
3. 0.5
4. 1

Q.

Are there situations in which we add subtract or multiply the obtained probability . For eg in a die the chance of getting no:2 is1/6 therefore the chance of getting 2or 4 is 1/6+1/6=2/6 . Is this correct mam if so are there other examples .

Q. The probability of a coin falling in the red region is ____ .

1. 0.25
2. 0.75
3. 0.5
4. 1

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. $\frac{1}{2}$
2. $\frac{1}{4}$
3. 1
4. 0

Q. Sum of probabilities of all the elementary events of an experiment is ____.

1. 0
2. 1
3. 0.50
4. 0.75

Q.

3 people A, B and C are sitting in a circular fashion. Find the probability that A and B do not sit together.

1. 0

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

3. 1

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

Q.

A bag contains blue balls and black balls. The probability of choosing a black ball at random is 1

1. True

2. False

Q.

The probability of getting both, heads and tails in one throw of a coin is ____.

1. 0
2. 1
3. 1/3
4. 1/2

Q. It is impossible that, a sure event and an impossible event takes place together in an experiment.

1. False
2. True

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. 0
2. $\frac{1}{2}$
3. 1
4. $\frac{1}{4}$