How many possible outcomes are there when a coin is tossed 20 times?

1,048,576 possible outcomes
= 1,048,576 possible outcomes (“samples”).

What is the probability of getting at least one head when we are tossing the coin 7 times?

Since the probability of flipping tails for one flip is 1/2, the probability of flipping seven tails straight is 1/2 to the 7th power, or 1/128. Therefore, the probability of getting at least one head is 1 – 1/128 = 127/128.

What is the probability of getting 1 or 2 heads?

The probability of getting heads on the toss of a coin is 0.5. If we consider all possible outcomes of the toss of two coins as shown, there is only one outcome of the four in which both coins have come up heads, so the probability of getting heads on both coins is 0.25. The second useful rule is the Sum Rule.

What is the probability of getting atleast 2 heads?

1/2
Answer: If you flip a coin 3 times, the probability of getting at least 2 heads is 1/2.

When a coin is tossed 3 times what are the odds against at least one head?

If you flip a coin three times the chance of getting at least one head is 87.5\%.

What is the probability that the coins will land heads all 7 times?

I know if you flip a coin 7 times, the odds of getting 7 heads in a row is 1 in 27 or 1 in 128.

What is the probability of getting at least one tail in 5 throws?

Answer is “31/32”

What is the probability of the first coin toss being heads?

At least one heads has a probability of 100\%, minus the probability of all tails. With an unbiased coin, the chance of the first toss being tails is 50\%. Of that 50\%, 50\% will be tails after the second toss.

What is the probability of getting at least one head?

Tossing a coin can give 2 outcomes. So, tossing a coin 20 times can give (2^20) outcomes. If we exclude the outcomes of getting at least one head; we will be left with the one and only option of getting all ‘tails’. So, the probability of getting at least one head = [ { (2^20) – 1} / (2^20)] = [1 – {1 / (2^20)}].

What is the probability of getting 6 tails on a coin?

The probability of getting 6 tails (no heads) is 1/2*1/2*1/2*1/2*1/2*1/2 = 1/64. The probability of getting other than no heads (i.e., 1 or more heads), is 1–1/64 or 63/64. You can see this as a Binomial Distribution. Since you toss the coin 6 times, then let Xi be defined as 1 if you got heads and 0 if you got tails for each toss.

How many outcomes are possible after tossing 20 coins?

After tossing a coin two outcomes are possible viz. Heads and tails.Since 20 coins are tossed the total number of outcomes possible are 2^20. There will be exactly one case in which no heads show up.