Paige asked in Science & MathematicsMathematics · 6 months ago

# Find the probability of at most one tail appearing on two tosses of a coin. (Round your answer to two decimal places.)?

Relevance
• 6 months ago

The probability of "at most 1 tail" equals 1 - (the probability of more than 1 tail). The probability of two tails (the only possibility more than 1) is 0.25.

Thus, the probability of at most one tail is 0.75

• 6 months ago

There are four possible outcomes:

tails then tails: 2 tails

Of those, the first three match the criteria "at most one tail."

So the answer is 3/4 = 0.75 = 75%

• Puzzling
Lv 7
6 months agoReport

Slight typo in the fraction at the end (should be 3/4), but you have the correct decimal/percentage.

• Anonymous
6 months ago

Well see this one is really easy because you can just list out the probabilities since there aren't that many:

HH - Heads on both tosses

TT - Tails on both tosses

HT - Heads, then tails on the next toss

TH - Tails, then heads on the next toss

HH, TT, and HT have at most one tails so that's three of the four (3/4) or 75%