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 or 7?
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TOTAL NUMBER = 20
PROBABILITY OF GETTING NUMBER MULTIPLE OF 3 = 6 number ( 3,6,9,12,15,18 )
TOTAL PROBABILITY = 6/20
3/10
PROBABILITY OF GETTING NUMBER MULTIPLE OF 7 = 2 Number ( 7,14 )
TOTAL PROBABILITY = 2/20
1/10
PROBABILITY OF GETTING NUMBER MULTIPLE OF 3 = 6 number ( 3,6,9,12,15,18 )
TOTAL PROBABILITY = 6/20
3/10
PROBABILITY OF GETTING NUMBER MULTIPLE OF 7 = 2 Number ( 7,14 )
TOTAL PROBABILITY = 2/20
1/10
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