jenna flips two pennies 105 times. how many times can she expect both coins to come up heads?

Answer 1

The chance of one coin landing on heads is 1 / 2.

Since Jenna flips two pennies you should multiply:

1 / 2 ∙ 1 / 2 = 1 / 4

105 ∙ 1 / 4 = 105 / 4 = 26.25

So, the answer is 26.25 times.

Approximately 26 times.