25% probability. (4 possibilities, 1 yielding that result)
'At least' means equal to or greater than. This meaning is not restricted to maths; it is one of the common everyday meanings of the phrase.So if you have a question which, for example, tells you to calculate the probability of getting at least one head when a coin is flipped twice then it means:What is the probability of getting one or more heads when a coin is flipped twice.
twice told tales
Twice-Told Tales was created in 1837.
Nathaniel Hawthorne wrote Twice-Told Tales.
Twice-Told Tales has 334 pages.
Twice-Told Tales - film - was created in 1963-09.
The duration of Twice-Told Tales - film - is 2 hours.
"Twice-Told Tales" is a collection of short stories written by Nathaniel Hawthorne. It was first published in 1837.
25%
Nathaniel Hawthorne wrote Twice-Told Tales.
Twice-Told Tales - 1963 is rated/received certificates of: Australia:PG Germany:12 USA:Approved
Your question is a bit difficult to understand. I will rephrase it as follows: What is the probability of getting a head if a coin is flipped once? p = 0.5 What is the probability of getting 2 heads if a coin is flipped twice = The possible events are HT, TH, HH, TT amd all are equally likely. So the probability of HH is 0.25. What is the probability of getting at least on head if the coin is flipped twice. Of the possible events listed above, HT, TH and HH would satisfy the condition of one or more heads, so the probability is 3 x 0.25 = 0.75 or 3/4. Also, since the probability of TT is 0.25, and the probability of all events must sum to 1, then we calculate the probability of one or more heads to be 1-0.25 = 0.75