Madhya Pradesh Police Exam Model Paper 6

Question : 93 of 101

Marks: +1, -0

A box contains 25 balls bearing numbers 1 , 2 , 3 , 4 _________ 25. If a ball is picked at random from the box, then the probability that the number on the ball is divisible by 5 or 7 is:

6/25
2/25
8/25
0

Validate

Solution:

Given:
A box contains 25 balls bearing numbers 1 , 2 , 3 , 4 _________ 25.
Formula used:
Probability(P) = (Number of required outcomes)/(Total number of outcomes)
Calculations:
Total number of outcomes = 25
Number of required outcomes = 8 (5, 7, 10, 14, 15, 20, 21, 25)

⇒ P = 8{/}25

∴ The probability of number on the picked ball is divisible by 5 or 7 is 8/25.

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