Question

the probability that a student and a class is left-handed is 0.1 what is the probability that a student chosen from this class is not left-handed?​

Answer 1

.9 or 90%

Explanation:

For every 10 students, there is a chance that one will be left handed. So the counterpart to 1/10 is 9/10, since there is a 9/10 chance someone will not be lefthanded. (9/10 can also be writen as 90%)