cards numbered 1 to 30 are put in a bag.A card is dream at random, find the probability that the dream card is (i) Prime number>7. (ii) Not a perfect square
Answers
Answered by
1
Answer:
(I) 1/5 (ii) 13/15
Step-by-step explanation:
(i) the probability is 1/5.
(ii)the probability is 13/15
Answered by
1
Answer:
(a) There are 10 prime numbers between 1 to 30. which are : 2,3,5,7,11,13,17,19,23,29.
PROBABILITY= Number of outcomes
Number of possible outcomes
10/30
[10- because no. of prime numbers. 30- because total no. of cards are 30.
now, ATQ. it says prime numbers>7
so, 10-3 = 7. ( as there are 3 numbers which are <7.)
THEREFORE ANSWER TI THE QUESTION IS 7/30.
(b). Now, there are 5 perfect squares between 1 -30. which are: 1,4,9,16,25. Non-square numbers are- 25. (30-5)
THEREFORE ANSWER IS 25/30. Now we can further simplify it. (Optional)
5/6 is the simplified answer.
Hope this helps you!!✌️✌️✌️
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