a) din cele 99nr.<100 , sunt pare 49 RASPUNS : P=49/99=0,4949= 49,49%
b)numere impare sunt 5o RASPUNS : p=50/99=0,5050 =50.5%
c) patrate perfecte sunt 1,4 9,16.25, 36, 49,64,81 RASPUNS: P=9/99=1/11 =9,09%
d)numere prime sunt: 1,2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67, 71 , 79, 83,89,97 RASPUNS: P=25/99=0,2525=25,25%