Question

JLTIN
011: Cards marked with numbers 4to 50 are placed in a box and mixed thoroughly. A card is
drawn at random, find the probability that the number on card is:
(a) prime number less than 20
(b) a number, which is a perfect square.​

Answer 1

Answer:

a. 8/47

b. 6/47

Step-by-step explanation:

No. of cards = 50-3 =47 (as no. 4 is also a card)

(a) No. of prime nos. before 20 = 8

So, Probability= no. of favourable outcomes/ total number of outcomes

Here, Probability of picking a card with a prime no. less than 20 = 8/47

(b) No. of prefect squares between 4 and 50= 6

here, Probability of picking out a card with a perfect square on it = 6/47