[2 Mark Question Answer]

Question 12 Marks

Suppose S is the event that will happen tomorrow and P(S) = 0.03. Find P(S’)

Answer

Given, P(S) = 0.03
P(S’) = 1 – P(S)
P(S’) = 1 – 0.03 ............[∵ P(S) + P(S’) = 1]
P(S’) = 0.97

Question 22 Marks

In a cricket match, a batsman hits a boundary 12 times out of 80 balls he plays, further, if he plays one ball more, what will be the probability that:
(i) he hits a boundary
(ii) he does not hit a boundary

Answer

(i) Total number of balls $=80$
Hits boundaries $=12$ times
$\therefore P$ (Hitting a boundary) $=\frac{12}{80}=\frac{3}{20}$
(ii) $\mathrm{P}$ (of not hitting a boundary) $=\frac{68}{80}=\frac{17}{20}$

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Question 32 Marks

Hundred identical cards are numbered from 1 to 100. The cards are well shuffled and then a card is drawn. Find the probability that the number on the card drawn is 40

Answer

Here, the total number of cards $=100$
card is drawn with number $=40$
favourable outcomes $=1$
Total number of outcomes $=100$
$\therefore P=\frac{1}{100}$

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Question 42 Marks

Hundred identical cards are numbered from 1 to 100. The cards are well shuffled and then a card is drawn. Find the probability that the number on the card drawn is 80

Answer

Here, the total number of cards $=100$
card is drawn with number $=80$
favourable outcomes $=1$
Total number of outcomes $=100$
$\therefore \mathrm{P}=\frac{1}{100}$

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Question 52 Marks

Hundred identical cards are numbered from 1 to 100. The cards are well shuffled and then a card is drawn. Find the probability that the number on the card drawn is 50

Answer

Here, the total number of cards $=100$
card is drawn with number $=50$
favourable outcomes $=1$
Total number of outcomes $=100$
$\therefore P=\frac{1}{100}$

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MATHS [2 Mark Question Answer]

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