Question

We toss 3 coins 100,000 times. How many times do we expect to see "Exactly 1 Head" appearing?

A.

12,500

B.

37,500

C.

3,750

D.

50,000

Answer 1

B

Answer 2

Think of it like this. Say 0 represents tails, and 1 represents heads (this is arbitrary). The possible combinations of any flip of the 3 coins are:
000
100
010
001
101
111
110
011
How many contain exactly 1 head?
100
010
001
Which is 3/8.

3/8*100,000 = 37,500 as Agent_Sniffle said.

Answer 3

@fewscrewsmissing Thank you for pointing that out...Honestly, I kinda guessed. xD Like I said in the chat..I dun feel so good. :/