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Three and three-tenths.

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Q: How many threes are in 10?
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Continue Learning about Other Math

How many threes in 21?

ii


How many threes in 27?

15


How many 3 in 21?

There are seven threes in 21


How many threes are there in the first one million digits?

We only use 10 digits (0 through 9), so I would say, there is one of them.


What is the probability that 13 rolls of a fair die will show three threes?

Not an easy question. Here's a long but logical answer. The chance of not getting a 3 on any throw is 5/6, so the chance of not getting any threes in the first 10 throws is (5/6)^10. Now, having reached that point, the chance of throwing three threes in the last three throws is 1/6 x 1/6 x1/6 or 1/216. So the probability of throwing three threes in any chosen three throws is (5/6)^10 x 1/216. This should seem logical because the probability of throwing three threes in the first three throws followed by ten failures to throw threes, should be the same as just getting threes in the last three throws. The probability is the same for getting threes in only the second, fourth and sixth throw, or any other combination of three throws. Now, there are a set number of combinations of 13 things taken in groups of three. This is given by the formula for C(13,3) = (13x12x11x10x9x8x7x6x5x4)/((10x9x8x7x6x5x4x3x2x1)x(3x2x1)). That cancels down to (13x12x11)/(3x2x1), and equals 286. So, there are this many ways you can pick out three throws which you want to be the threes, and the probability of them actually being threes is the first calculation we did. The answer to the question is 286 x (5/6)^10 x 1/216 which is 0.2138453, about.

Related questions

How many threes are there between 10 and 226?

About 73.


When was Not for Threes created?

Not for Threes was created on 1997-10-27.


How many threes are in 81?

27 threes are in 81


how many threes are in 313456437333373145673337890?

there are a ton of threes and it's 11 3s


How many threes in a deck of cards?

There are four threes in a standard deck of cards.


How many three are in 100?

99 / 3 = 33 threes 100/3 = 33.33 threes which rounded would be equal to 33 threes


How do you use symbols to show how five threes equal 10?

Five threes do not equal ten, so you can't use symbols to show that.


How many threes in twenty-seven?

i


How do you get the answer ten using four threes?

(3x3) + (3/3) = 10


How many threes in 21?

ii


How many threes in 27?

15


How many threes are equal to 27?

4