What will be the Probability that This Slip Bears a Prime Number? If

Natural numbers 4 to 15 are written on different slips (one number on one slip), kept in a box and mixed well. Renu picks up one slip from the box without looking into it. What is the probability that this slip bears a prime number?

  1. 1/3
  2. 5/12
  3. 2/5
  4. 3/11
Monis Rasool Professor Asked on 20th September 2015 in Maths.
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1 Answer(s)

Answer: (1) 1/3

Explanation:-
The number of slips = 15 – 3 = 12
The prime number between 4 to 15 = 5, 7, 11, 13
Then, the number of slips bears a prime numbers = 4

Then, the probability of the slips bears a prime number = 4/12
= 1/3

Hence, the answer is (1) 1/3.

Anurag Mishra Professor Answered on 20th September 2015.
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