1. Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random What is the probability that the ticket drawn has a number which is a multiple of 3?
A. 3/10
B. 1/2
C. 1/4
D. 1/5
A. 3/10
B. 1/2
C. 1/4
D. 1/5
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Answer:
D. 2/5 yan
Step-by-step explanation:
The correct option is D 2/5
Out of the integers from 1 to 20,
Multiples of 3: 3, 6, 9, 12, 15, 18
Multiples of 7: 7, 14
Thus multiples of 3 or 7 are 3, 6, 7, 9, 12, 14, 15, 18, i.e., 8 numbers.