Total number of cards =49
Total number of outcomes =49
Odd number
Favourable outcomes 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49
Number of favourable outcomes =25
Probability (E)=No.of favourable outcomesTotal number of outcomes
=2549