The "front" of a coin usually has a picture of someone's head on it and is therefore called "heads". The other side is probably called "tails" just because the tail is on the opposite end of an animal to the head.
10 coins would be tails up.
Heads and HeadsHeads and Tails Tails and HeadsTails and Tails
The probability of 2 coins both landing on heads or both landing on tails is 1/2 because there are 4 possible outcomes. Head, head. Head, tails. Tails, tails. Tails, heads. Tails, heads is different from heads, tails for reasons I am unsure of.
If we toss three coins 240 times, how many times can we expect the coins to have three tails showing?
Four coins.
Thirty coins.
The probabilty of you flipping 3 coins and getting all heads or tails is 0.125 or 1/8.
The probability of flipping three tails with three coins is (1 in 2)3 or 1 in 8 or 0.125.
If they are fair coins, the probability is 0.25
the probabiluty of two coins landing on tails is 1/2 x 1/2 = 1/4, or one chance in four
1/4
three heads two head, one tails one heads, two tails three tails