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How many 4 digit numbers can be formed using a digit only once per number?
There are ten digits 0-9 that you can choose from. 10P4 = is the number of ways to order these ten digits into four digit numbers.However, 0 cannot begin the number or else it is a 3 digit number (0341 is a three digit number). So, we must subtract from 5040 the number of 3 digit numbers which do not contain 0. There are 1-9 digits to choose from. 9P3 = 504 is the number of ways to order these nine digits into three digit numbers.5040 - 504 = 4536______________________________________________Another way to arrive at the same result:You have 9 choices for the first number (1,2,3,...,9). Once you choose the first number you have 9 numbers to choose from for each of the remaining three numbers: (0,1,2,3,...9) but excluding the number you chose for the first number. So you have (9P3) ways to choose the final three digits.Thus, you have a total of 9*(9P3) ways to form your four digit number:9*(9P3)=9*9*8*7=4536
What is the comparative and superlative degree of equal?
as equal as, so equal as, more equal than, the most equal of.
What is the exact meaning of equal set?
equal set mean the set is equal equal est means that the set is equal
Is 28 cups greater than less than or equal to 14 pints?
The two are equal.
Polygram if has equal angels does it have equal sides?
No. A rectangle has four equal angles, but the sides are not all equal.
