Question

A box contains discs numbered from 20 to 60. If one disc is drawn at random, the

probability of getting a prime number is

a)10/40 b)9/40 c)10/41 d) 9/41

Answer 1

Answer:

b) 9/40 is the correct answer

Step-by-step explanation:

as the 9 prime numbers are there between 20 And 60 IE 23, 29, 31, 37, 41, 43, 47, 53, 59,

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Answer 2

Answer:

B ) 9/40

Step-by-step explanation:

• Prime numbers between 20 and 60 include-
• 23,29,31,37,41,43,47,53,59.
• total numbers from 20 to 60 = total 40 numbers ( 60-20= 40 )
• total prime numbers = 9
• total numbers - 20 to 40 = 40

Probability = no. of favourable outcomes

total no. of outcomes

• number of favourable outcomes = 9
• total number of outcomes = 40

So, answer is = 9

40