0
What are the chances you are going to toss 2 pennies 20 times how many times do you expect the 2 pennies will come up 2 heads?
Alcohen2006
Each time you toss two pennies, there are four ways they can land:
H H
H T
T H
T T
One of the four ways is (Heads - Heads), so the probability of 2 heads is 1/4 or 25% .
If the pennies are 'fair' (not loaded), and you toss them a large number of times,
you should expect 2 heads roughly 1/4 of the time.
Out of 20 tosses, that's 5 times.
But don't bet on it.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Why do pennies land heads up?
Luck of the flip, but they do not always land heads up.
What fraction when 2 pennies are tossed 1000 times?
Out of the 1,000 tosses, you should expect to see 2 heads 250 times (1/4 of them), 2 tails 250 times (1/4 of them), and one of each 500 times (1/2 of them). Out of the 2,000 coin faces that show, you should expect to see very close to 1,000 heads (1/2 of them) and 1,000 tails (1/2 of them).
Chances of getting heads 2 out of 20 flips?
1/10 not likely
What are your chances of landing on heads when you toss a coin?
50 / 50 50% 1/2
When tossing 3 fair coins what are the chances of getting 2 heads?
It is 3/8
You are going to toss 2 pennies 20 times how many times do you expect the 2 pennies will come up as 2 heads?
5 times.When tossing 2 pennies there are 4 equiprobable outcomes or events with 1/4 ofprobability for each to happen:P(H,H) = 1/4P(H,T) = 1/4P(T,H) = 1/4P(T,T) = 1/4So if you toss 2 pennies 20 times, the "expected" number of times that 2 heads (H,H)will come up is 1/4 of the 20 times, that is 5 times.
Why do pennies land heads up?
Luck of the flip, but they do not always land heads up.
What has 50 heads and tails?
A roll of pennies (there are 50 pennies to a roll).
What are chances of getting heads 24 times in a row?
The chances of getting heads 24 times in a row is 1 in 224, or 1 in 16,777,216.
Do Pennies give good luck?
Yes they do. Only if it's on the heads side.
What fraction when 2 pennies are tossed 1000 times?
Out of the 1,000 tosses, you should expect to see 2 heads 250 times (1/4 of them), 2 tails 250 times (1/4 of them), and one of each 500 times (1/2 of them). Out of the 2,000 coin faces that show, you should expect to see very close to 1,000 heads (1/2 of them) and 1,000 tails (1/2 of them).
How much are 100 year old pennies worth that have Indian heads on them?
WHAT YEARS be more specific..
Were there any Lincoln 1901 pennies without Lincoln inside the memorial on reverse side ever struck?
Lincoln pennies were struck 1909~ . In 1901, they were minting Indian heads
Chances of getting heads 2 out of 20 flips?
1/10 not likely
What are your chances of landing on heads when you toss a coin?
50 / 50 50% 1/2
When tossing 3 fair coins what are the chances of getting 2 heads?
It is 3/8
Why do snails have heads?
The feelers, to find where they're going, and the eyes, to see where they're going, are on the head.
