As a solution to the four fours problem (using the number four no more than four times to come up with the solution, 31 is equal to (4!+4)/4+4!
31 is prime so you can only multiply 1 and 31 to get 31. Using non-whole numbers you can get an infinite number of different options. For instance, 15.5 times 2 will make 31. Another example: 8 times 3.875 will also make 31.
To get the number 57 using only the digits in 7312, you can subtract 31 from 73. Specifically, 73 - 31 = 42, and then add 15 (which is 3 + 12) to get 57. Therefore, the calculation can be expressed as (73 - 31) + (3 + 12) = 57.
2^(4+1)-3
The answer is 31C5 = 31!/[26!5!] = 169,911
You can make every number up to 15 using only 8, 4, 2, and 1 .If you want to expand your horizons all the way to 18, you'll need the next onein the same series. That's 16. Once you have that, you'll be able to make everynumber up to 31 .
31 is prime so you can only multiply 1 and 31 to get 31. Using non-whole numbers you can get an infinite number of different options. For instance, 15.5 times 2 will make 31. Another example: 8 times 3.875 will also make 31.
Very simple answer. ((4³) ÷ 2) - 1 = 31. Let's check out equation to verify its solution is the desired number. ((4³) ÷ 2) - 1 = 31 (64 ÷ 2) - 1 = 31 32 - 1 = 31 31 = 31.
2^(4+1)-3
The answer is 31C5 = 31!/[26!5!] = 169,911
The only 'factors' of '31' are '1' & '31', because '31' is a prime number.
You can make every number up to 15 using only 8, 4, 2, and 1 .If you want to expand your horizons all the way to 18, you'll need the next onein the same series. That's 16. Once you have that, you'll be able to make everynumber up to 31 .
to get 31 using the number 4 exactly 4 times, you can do: (4! + 4)/4 + 4!4! is four factorial, which is 4x3x2x1, which is 24. So you have 24 + 4 = 28, /4 = 7, + 24 = 31.
2^3 Times 4 minus 1
31 is the only one that has only two factors: 1 and itself. It is the prime number.
The only positive integer factors of 31 are 1 and itself, therefore, it is prime.A prime number is defined as a number with only factors of 1 and itself. With this definition, 31 is a prime number because the only factors of 31 are 1 and 31.31 is a Prime Number.31 is a prime number because it has only two factors which are itself and one.
31 times 1 = 31 As 31 is a prime number, the only whole numbers that do it are 1 × 31. There is another method using fractions. Ex: 15.5 x 2=31Only 1 times 31 = 31 . This is because 31 is a Prime number.
Yes, 31 can only divided by 1 and 31. So it is a prime number