Question

cards bearing numbers 1,2,3,5..., 35 are kept in a bag. A card is drawn at random from the bag. Find the probability of getting a card bearing.

1) A prime number less than 15
2) A number divisible by 3 and 15
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Answer 1

Answer:

1) 6/35 or 0.171  

2) 2/35 or 0.057

Step-by-step explanation:

Total number of cards= 35

1) Probability that a card drawn at random is a prime number less than 15

Number of prime numbers less than 15 = $\pi (15) = 6.$

Hence, probability= number of favourable events/total no. of events

= 6/35 or 0.171

2) Probability That a number is divisible by 15 and 3= 2/35 or 0.057

as 15 and 30 are the numbers.

Hope it helps.