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How many 4 number combinations are there in the numbers1 to 20?
To calculate the number of 4-number combinations from 1 to 20, we can use the formula for combinations, which is nCr = n! / (r!(n-r)!), where n is the total number of items and r is the number of items to choose. In this case, n = 20 and r = 4. Plugging these values into the formula, we get 20C4 = 20! / (4!(20-4)!) = 4845. Therefore, there are 4845 different 4-number combinations possible from the numbers 1 to 20.
How many different 4 digit combinations are there for numbers 1 2 3 (assuming all three numbers are used and no numbers can be repeated more than once) (For example, 1233 is acceptable, but 1133 is not.)?
NOT AN ANSWER:More acceptable combinations:1231 3213 2321More unacceptable combinations:1112 2222 3113Thanks.
What is the smallest odd number can make out of 4 5 3 6?
To find the smallest odd number that can be made using the numbers 4, 5, 3, and 6, we need to consider all possible combinations. The odd numbers that can be formed are 3 and 5. The smallest odd number would be 3, which can be formed using the numbers 3 and 6 by ignoring the digit 6.
Which of these numbers is a square number?
There are many different numbers that are square numbers. A square number is defined as the number you get when you multiply an integer by itself. For example 4 x 4 equals 16 so 16 is the square number.
What is the ratio of the number of one-digit prime numbers and the number of one-digit composite numbers?
The ratio of the number of one-digit prime numbers to the number of one-digit composite numbers is one to one. The one-digit prime numbers are 2, 3, 5, and 7. The one-digit composite numbers are 4, 6, 8, and 9. Therefor, the ratio is 4:4, which simplifies to 1:1.
