Question 828525
Total number of cards, {{{N=100}}}
50 are even, 50 are odd.
P(odd)={{{50/100=1/2}}}
P(even)={{{50/100=1/2}}}
Cards less than 14 : {2,3,4,5,6,7,8,9,10,11,12,13} 12 instances or P(N<14)={{{12/100=3/25}}}
Perfect squares : {4,9,16,25,36,49,64,81,100} 9 instances or P(perf. sq.)={{{9/100}}}
Prime number less than 20: {2,3,5,7,11,13,17,19} 8 instances or P(P<20)={{{8/100=2/25}}}