box contains 30 discs bearing numbers from 1 to 30. One disc is drawn at random from the box. The probability of getting a disc bearing a prime number less than 20 is:
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Answered by
0
Answer:
Probability of an event is defined as the ratio of favorable outcomes to that of the total outcomes.
(i) Number of two-digit numbers in the range 1−30 is 21.
Hence, probability that the drawn disc is a two digit number is:
P
1
=
30
21
=0.7
(ii) Number of perfect square numbers in the range 1−30 is 5.
Hence, probability that the drawn disc is a perfect square number is:
P
2
=
30
5
=0.167
Answered by
2
Answer:
20/30 or 2/3
Step-by-step explanation:
P(E) = favourable outcomes/ total number of outcomes.
We want number less than 20, so favourable outcome= 20,
Total number of outcomes= 30.
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