Answer: 0.5
Explanation:
Given : The total number of cards in a deck = 52
Number of cards with hearts = 13
Number of cards with spade = 13
Probability of getting a card with heart :-
![P(H)=(13)/(52)=(1)/(4)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/i8u463v5e8gxt3w1fg1zm0hq8jg04uxzbd.png)
Probability of getting a card with spade :-
![P(S)=(13)/(52)=(1)/(4)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/evchgt4kffvndo7hug7y9sd5z8l7dtawyq.png)
Since both the events are independent, then the probability that a heart or spade is chosen :-
![P(H\ or\ S)=P(H)+P(S)\\\\=(1)/(4)+(1)/(4)\\\\=(2)/(4)=(1)/(2)=0.5](https://img.qammunity.org/2019/formulas/mathematics/middle-school/1571f6bezckfqhtjbqll3w8kgmyiqw4ab7.png)
Hence, the probability that a heart or spade is chosen = 0.5