Question

a box contains 90 discs,numbered from 1 to 90 ,if one disc is drawn at random from the box,the probability that it bears prime number less than 23 is
1)7/90
2)1/9
3)4/45
4)4/15​

Answer 1

Answer:

Solution :

Total number of discs = 90. <br> Prime number less than 23 are 2,3,5,7,11,13,17,19. <br> Their number is 8. <br> P(getting a prime number less than 23) =

Step-by-step explanation:

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