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How many three digit combinations 000-999are there without repeating the same number twice?
999
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Professor
Taiga
ReneI think you mean numbers made out of three different digits.
The first digit can be any one of 10. For each of these . . .
The second digit can be any one of the remaining 9. For each of these . . .
The third digit can be any one of the remaining 8.
Total possibilities = 10 x 9 x 8 = 720 different 3-digit numbers, without repeated digits.
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How many 4 number combinations are possible with 12345 without repeating?
There are only five combinations: 1234, 1235, 1245, 1345 and 2345.
How many 4 number combinations are there with numbers 1 through 35 without repeating any numbers?
There are 35C4 = 35*34*33*32/(4*3*2*1) = 52,360 combinations.
What do you call the decimals numbers that never end?
Decimal numbers that never end but that end up having a repeating pattern are called recurring decimals or repeating decimals.Examples would be 1/3 = 0.33333333...or 452/555 = 0.8144144144144144... (where 144 is the repeating pattern).Reaching that repeating pattern is known as becoming periodic. Only rational numbers will have a repeating pattern. (The repeating pattern may be 00000, as in 4/2 = 2.00000... .)If a decimal number continues forever without having a repeating pattern, then it is a irrational number. One example of a number that continues forever without repeating would be π (pi) which continues infinitely without repeating.Pi is also referred to as a transcendental number.
What is the largest ten digit number without repeating the numbers?
9,876,543,210 9876543210
What is the biggest number that can be formed using the digits 0 to 9 without repeating any digit?
9876543210
