Question

Question 10:
In a class of 60 students. 20 are in drama club and 30 are in the art club. If a student is selected at random, what is the probability that the selected student is:

a. In the arts club
b. Neither in the drama club nor in the arts club

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Answer 1

Step-by-step explanation:

$\sf \large \: solution$

a. Let A be the event that the selected student is in the arts club.

So, no. of favourable outcomes for occurrence of event A

= no . of students in the arts club

= 30

Probability that a selected student is in the arts club is

$\sf = \frac{30}{60} = \frac{1}{2}$

Therefore, probability that the selected student is in the arts club is

$\sf \frac{1}{2}$

________________________________

b. Let X be the event that the selected student is neither in the drama club nor in the arts club.

No. of favourable outcomes of occurrence of event X

= No. of students who are neither in the drama club nor in the arts club

= 60 - 20 - 30

= 10 .

Probability that the selected student is neither in the drama club nor in the arts club

$\sf = \frac{10}{60} \: = \frac{1}{6}$

Thus, the probability that the selected student is neither in the drama club nor in the arts club is

$\sf \frac{1}{6}$

_______________________________

$\sf \large \: Additional \: information$

• Probability is the measure of uncertainty.

• Generally, there are three types of situations: certain to happen, may or may not happen, and impossible to happen.

• Experiment is an activity which produces well defined outcomes. Probability of an outcome of an experiment

$\sf= \frac{Number \: of \: times \: an \: outcome \: ocours}{Total \: number \: of \: times \: the \: experiment \: is \: conducted}$

• When a coin is tossed, either head or tail appears on the top. Both the outcomes have equal chances of happening. So, we say that, Probability of getting a head on tossing a coin = 1/2 coin = 1/2

• Probability of getting a tail on tossing a coin

• If a dice is rolled, there are six possible outcomes 1, 2, 3, 4, 5 or 6 and there is an equal chance of getting any one of them. So, we have, Probability of getting 1 on rolling a dice = 1/6

Answer 2

Answer:

Answer the following questions in 100-120 words: (Clues are also given) 1. Comment on the attitude shown by Taplow towards Crocker-Harris. ( Introduction - Taplow has a strange attitude towards Crocker-Harris - Taplow feels - Crocker-Harris - “hardly human” – shrivelled like a nut- not a “sadist” though he has no feelings at all - he seems to hate people who like him - a teacher who a student can never disobey - waits for Crocker-Harris even when he is late. Taplow still likes Crocker-Harris - laughs at his poor jokes - gesture of politeness - respectful towards him and dares not cut the extra work - only moves out when- a task related to Crocker Harris himself – likes him).

Step-by-step explanation:

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