How numerous times do you have to flip a coin to get heads?

And so the probability of having actually at least one pair of top in a row in four flips = 1 – 0.421875 = 0.578125 or roughly 58%. Therefore we must toss a coin 4 time to attain a 50% opportunity of gaining two top in a row at least once….Uncanny Coincidences.

You are watching: You flip a coin 30 times and get heads 11 times


xf (rounded up)F (rounded up)
1000≈ 7.4 x 10301≈ 7.4 x 10301

What are the odds that flipping 100 coins and having them every come up heads?

The probability of every heads is 1/2 to the 100th power, which is around equal come a decimal suggest with 30 zeroes. So girlfriend would have to do this experiment around 10^30 times prior to you could expect to see it when (with a probability of around 0.36).

Is it possible to upper and lower reversal a coin and also get heads every time?

Jungsun: over there is an 1/2 possibility to get a head the a coin every time. Junho: follow to probability, there is a 1/1024 opportunity of acquiring 10 consecutive top (in a operation of 10 flips in a row). However, this walk not typical that it will be precisely that number. It might take one human being less throws to get 10 continuous heads.

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Can you rig a coin toss?

The common coin toss is no so arbitrarily after all, and also can quickly be manipulated to revolve up heads, or tails, a Canadian study has found.


What are the odds of flipping heads 11 times in a row?

Since each coin toss has a probability of heads equal to 1/2, I simply need to multiply together 1/2 eleven times. That’s a 0.05% opportunity of flipping eleven heads in a row!

Can friend flip every coins and have every heads up?

We recognize that flipping every coin provides all coins heads up, so no other set of flips have the right to lead to every heads up. In particular, every succession of fewer 보다 N flips will be tantamount to a collection of flips which is not this set, for this reason it will not lead to the desired position.

How to calculation if every coins confront heads up?

Given a circular list of coins, the all have Tails dealing with up. In each move, if we flip the coin at position i, climate the coins at positions ns − 1 and i + 1 gain flipped together well. That is, consider: H H H T T: if i flip the coin at index 3 (0-based indexing), climate the result would be: H H T H H. Initial state: T T T T T T ( N coins)


What’s the minimum number of moves to have actually all coins face up?

Therefore, N moves is the minimum. Every relocate flips 3 coins, so it have the right to never be done in under moves than the ceiling of N / 3. If N = 3 k, we just choose every third coin ( N / 3 moves). If N = 3 k + 1, there’ll be an overlap and also at least k + 1 moves will be needed.

How numerous coins room heads up and also 90 space tails down?

100 coins total, 10 of them are heads up, 90 space tails up. Definition all of them room heads up and also tails down. Break-up it 50/50 and also you room done. That is not as easy as to just split it. And also it claims heads up tails UP. Offered 10 h, 90 t. Choose some arbitrarily 10 coins contact it P1. Remainder is P2. Upper and lower reversal the coins in P1. P1 and P2 have actually the same variety of heads.


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