Answer:
1/11
Explanation:
given that the sample space is 
24 sweets in a bag. 
4 sweets are mint. 
2 are humbugs. 
3 sweets are jellies
sample size= 24+4+2+3= 33
The probability is the number of possible outcome/the number of event
the probability of picking a jelly is 
Pr(jelly)=3/33
Pr(jelly)=1/11