Study guides

☆☆

Q: How many three digit number can you make from the numbers 2 3 4 7?

Write your answer...

Submit

Still have questions?

Related questions

There are no three didgit numbers but there are 63 three digit numbers.

what is the greatest 4-digit number you can make with the digit 0,1,2,3, and 4

8

Assuming you're allowed to repeat numbers, the answer is 81. For each digit, you have three choices: 2, 5, and 6. So there are three one-digit numbers you can make, and each one digit number can be combined with any of three other digits to make a two-digit number, giving 9 (3 times 3) possibilities. Now you can take any of the nine two-digit numbers as the tens and ones places in the four-digit number and any other two-digit number as the thousands and hundreds places, which gives 81 (9 times 9) possibilities. If you can't repeat numbers, the answer is zero because you don't have enough numbers to fill all the digits.

There are 10 digits, but for a three digit number the first number cannot be a 0. Thus: there is a choice of 9 digits for the first (and last digit which must be the same), with 10 choices of digit for the second (middle) digit, making 9 × 10 = 90 such palindromic numbers.

There are 5*4*3 = 60 such numbers.

6, as long as they are all different

There are 5 numbers which can make the 3 digit numbers in this example. Therefore each digit in the 3 digit number has 5 choices of which number can be placed there. Therefore number of 3 digit numbers = 5 x 5 x 5 = 125

144

198 of them.

24 if you don't repeat any numbers.24

The sum is 22 times the sum of the three digits.

People also asked