Experimental Probability

Q.

$15$ cards, numbered $1,2,3,\dots ,15$ are put in a box and mixed thoroughly. A card is drawn at random from the box. Find the probability that the card drawn bears an even number, and a number divisible by $2$ or $3$.

Q. Alexandra spins the spinner once.



Find the probability of getting an odd number.

1. $\frac{4}{8}$
2. $\frac{5}{8}$
3. $\frac{1}{8}$
4. $\frac{3}{8}$

Q.

A bag contains $5$ red, $8$ black and $7$ white balls. One ball is chosen at random. What is the probability that the chosen ball is black?

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

2. $\frac{2}{5}$

3. $\frac{3}{5}$

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

Q.

According to the theoretical probability approach of tossing a coin, the probability of getting a head is (in decimal form)

__

Q. Probability can be expressed in both decimals and percentage does that mean that we can express it in ratio?

Q. In a bag, red, green and blue marbles are there. The probability of getting a red marble is


\begin{tabular}{|c|c|c|c|} \hline Color & Red & Green & Blue \\ \hline Number of marbles & 8 & 12 & 15 \\ \hline \end{tabular}

Q.

Jason tossed a fair coin $3$ times.

What is the probability of getting a head and two tails in any order?

1. $\frac{3}{8}$

2. $\frac{4}{8}$

3. $\frac{5}{8}$

4. $\frac{6}{8}$

Q. If the simplified value of $[{(-\frac{2}{3})}^3\times (-\frac{2}{3})]÷{(-\frac{2}{3})}^2$ is $\frac{p}{q}$, where $p$ and $q$ are co-prime, then $q-p$ is:

Q. A basket contains 5 oranges, 2 apples and 7 guavas. Match the correct pair.

1. Oranges : Apples
2. Oranges : Guavas
3. Apples : Guavas
4. 5 : 2
5. 2 : 7
6. 5 : 7

Q. Music players of different brands are available in an online shop as given. What is the probability that a customer orders a brand 'B' type of music player?

1. $\frac{25}{50}$
2. $\frac{25}{40}$
3. $\frac{15}{50}$
4. $\frac{15}{50}$

Q.

According to theoretical probability, approach tossing a coin, the probability of getting a head is (in decimal form)

__

Q.

In tossing a coin 10 times, the outcomes are

H, H, H, T, H, T, T, T, H, H

The empirical probability of getting a head is (in decimal form)

__

Q.

The theoretical probability of getting a head in a toss of a coin is __. Give the answer up to 1 decimal place.

Q.

A die is thrown. Find the probability of getting a number greater than $3$.

Q. A box contains two pairs of socks of two colours (black and white). I have picked out a white sock first and latter if I pick one more with my eyes closed, what is the probability that it will make a pair?

1. $\frac{1}{2}$
2. $\frac{1}{4}$
3. $\frac{1}{3}$
4. $\frac{1}{5}$

Q. If one symbol represents 50 children then half symbol represents ........... children

1. $5$
2. $25$
3. $15$
4. $20$