An amusement park has 4 green and 3 blue entry doors whereas 2 orange and 5 yellow exit doors. In how many ways can a person exit the amusement park?
Explanation:
There are 2 orange and 5 yellow exit doors i.e., total 7 exit doors.
Out of total 7 exit doors, the person can leave from any 1 of the doors.
∴ Number of ways of exiting the park = number of ways of selecting 1 door out of 7 = 7C1 = 7.
Hence, 7.
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