Question 1 :
If a coin is tossed, then the probability that a head turns up is ______.

Question 2 :
Observe the table given.<table class="wysiwyg-table"><tbody><tr><td>Club</td><td>English</td><td>Maths</td><td>Science</td></tr><tr><td>Number of students</td><td>$99$</td><td>$121$</td><td>$154$</td></tr></tbody></table>A student is chosen randomly from the group as the co-ordinator of all the clubs. What is the probability that the student is from the science club?

Question 3 :
To know the opinion of the student about the subject<span class="wysiwyg-font-size-medium"> statistic, a survey of $200$ students was conducted.<p>The data is recorded in the following table</p><table class="wysiwyg-table"><tbody><tr><td>Opinion</td><td>Like</td><td>Dislike</td></tr><tr><td>No. of Students</td><td>$135$</td><td>$65$</td></tr></tbody></table><p>Find the probability that a student chosen at random</p><span class="wysiwyg-font-size-medium"><p></p><p></p><p></p><p>$(i)$ likes statistics, $(ii)$ does not like it.</p>

Question 4 :
When $2$ dice are thrown simultaneously what is the probability that there is exactly one $5$?

Question 5 :
<p>There are $40$ students in a class and their results is presented as below :</p><table class="wysiwyg-table"><tbody><tr><td>Result (Pass/Fail)</td><td>Pass</td><td>Fail</td></tr><tr><td>Number of Students</td><td>$30$</td><td>$10$</td></tr></tbody></table><p></p><p>If a student chosen at random out of the class, find the probability that the student has passed the examination.</p>

Question 6 :
<p>There are $500$ packets in a large box and each packet contains $4$ electronic devices in it. On testing, at the time of packing, it was noted that there are some faulty pieces in the packets. The data is as below:</p><table class="wysiwyg-table"><tbody><tr><td>No. of faulty <br/>devices in a packet</td><td>Number of packets</td></tr><tr><td>&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160;$0$</td><td>&#160; &#160; &#160; &#160; &#160; &#160; &#160;$300$</td></tr><tr><td>&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160;$1$</td><td>&#160; &#160; &#160; &#160; &#160; &#160; &#160;$100$</td></tr><tr><td>&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160;$2$</td><td>&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160;$50$</td></tr><tr><td>&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160;$3$</td><td>&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160;$30$</td></tr><tr><td>&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160;$4$</td><td>&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160;$20$</td></tr><tr><td>Total number of packets</td><td>&#160; &#160; &#160; &#160; &#160; &#160; &#160; $500$</td></tr></tbody></table><p>If one packet is drawn from the box, what is the probability that all the four devices in the packet are without any fault?</p>

Question 7 :
<p>The record of a weather station shows that out of the past $250$ consecutive days, its weather forecasts were correct $175$ times.&#160;What is the probability that on a given day it was correct?</p>

Question 8 :
A die is tossed $80$ times and the number $3$ is obtained $14$ times. Now, a dice is tossed at random, then the probability of getting the number $3$ is ________.

Question 9 :
If $3$ coins are tossed simultaneously, the probability of $2$ heads and $1$ tail is:

Question 10 :
A coin is tossed. What is the probability of getting a head and a tail?

Question 11 :
In a single throw of a die, the probability of getting a multiple of $3$ is ____________.

Question 12 :
A coin is tossed $5$ times. The probability of $2$ heads and $3$ tails is:

Question 13 :
A dies is thrown three times and the sum of three numbers obtained is $15$. The probability of first throw being $3$ is:

Question 14 :
A box contains $40$ red and blue marbles. If a marble is drawn at random, the probability of picking a blue marble is $\dfrac {3}{8}$. Ansh takes out one red and nine blue marbles and then draws a marble at random. Find the probability of drawing a blue marble

Question 15 :
Archaeological survey indicates that the odd of occurring earthquake in Greater Himalayan region due to Tehri Dam are $5$ to $7$. What is the probability of earthquake in Greater Himalayan region?