The correct option is D 37
Here, the total number of days = 7
Event, E = A day having a temperature of more than 40∘C.
It can be seen there are only 3 days where the temperature is more than
40∘C, namely, Monday, Thursday and Friday.
Therefore, number of days where event happened = 3
P(E)=Number of trials in which the event happenedTotal number of trials =37