Question

Person chooses a date at random in november for a party. find the probability that he chooses 1) a monday 2)wednesday 3)a friday 4) a saturday or a sunday

Answer 1

Step-by-step explanation:

Number of days in November = 30 days or 4 weeks and 2 days

Total outcomes = 30

Number of each day = 4

This means that there are surely at least 4 Monday Tuesday Wednesday........... and Sunday in November.

The remaining 2 days can be

1.) Monday Tuesday

2) Tuesday Wednesday

3) Wednesday Thursday

4) Thursday Friday

5) Friday Saturday

6) Saturday Sunday

7) Sunday Monday

Now,

Question 1)

Favourable outcomes = 4 guaranteed Monday + 1 either the 1st or 7th case

Probability of getting Monday from the 7 cases = 2/7

So

Probability of having the party on monday = 4+(2/7)/30

= 1/7

Question 2

Same goes for Wednesday.

P(E) = 1/7

Question 3

Also 1/7

Question 4

Favourable outcomes = 4 + (3/7)/30

= 31/210

0.1476

Sorry not much sure about this.

I'll update the Ques by evening if I find any mistake

hope this help