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How many of the 900 three digit numbers have at least one even digit?
Wiki User
∙ 11y ago
775 of them.
It is simpler to find out how many have no even digits: this is 5*5*5 = 125.
The rest = 900 - 125 must have at least one even digit.
This is not better, but this is how I got there: Of the 900, 400 have an even number in the 100's place. Of the remaining 500, 250 have an even number in the tens place, and of the remaining 250, 125 have an even number in the ones place. 400 + 250 + 125 = 775.
Wiki User
∙ 11y ago
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How many three digit counting numbers are multiples of 2 but not of 55?
There are 898 three-digit even numbers. Nine of them are multiples of 55. That leaves 889 * * * * * There are 450 three-digit even numbers and 17 of them are multiples of 55. So that leaves 433.
What is the greatest three digit even numbers?
The answer is 998.
What is the least five-digit even numbers with no repeated digits?
24680 using only even numbers or 12346 which is an even number
How many 3 digit even numbers are there?
There are 450 even three-digit integers, from 100 to 998. This excludes numbers with leading zeroes (000 to 099).
How many even 3-digit numbers can be formed from digits 0 1 2 4 5 7 9 if each digit can be used only once?
To solve this question, two cases must be considered:Case 1: The three-digit even number ends with 0.If the three-digit number ends with 0, then the number must be even. After the digit 0 is used, six digits remain. After any one of these six digits is chosen to be the first digit, five digits remain. To complete the number, any of the five remaining digits could be chosen to be the second digit of the number.___6___ * ___5___ * ___1___ = 30 three-digit even numbers ending in 0.1st digit-------2nd digit----3rddigit (0)Case 2: The three-digit even number does not end with 0.If the three-digit number does not end with 0, it can end with 2 or 4. Therefore, there are two possibilities for the third digit. The first digit could be any of the remaining digits, EXCEPT 0: if 0 were the first digit, it would not be a three-digit number. Therefore, there would be five possible digits for the first digit. 0 could be used as the second digit, along with the four remaining digits that were not previously used.___5___ * ___5___ * ___2___ = 50 three-digit even numbers not ending in 0.1st digit-------2nd digit-----3rddigit (0)The total number of three-digit even numbers is 80, since 30 three-digit even numbers ending in 0 plus 50 three-digit even numbers not ending in 0 equals 80.
Can the smallest even three-digit number be 000?
No. Three-digit numbers start with 100.
What is the largest three-digit even numbers?
998
How many three digit counting numbers are multiples of 2 but not of 55?
There are 898 three-digit even numbers. Nine of them are multiples of 55. That leaves 889 * * * * * There are 450 three-digit even numbers and 17 of them are multiples of 55. So that leaves 433.
How many positive three-digit perfect cubes are even?
I believe there are 2 positive three-digit perfect cube numbers, that are even.
What is the greatest three digit even numbers?
The answer is 998.
How many digit even numbers are there?
There are 450 even three-digit integers, from 100 to 998. This excludes numbers with leading zeroes (000 to 099).
What is the least five-digit even numbers with no repeated digits?
24680 using only even numbers or 12346 which is an even number
How many three digit even numbers are possible if the left digit cannot be zero?
450
How many 3 digit even numbers are there?
There are 450 even three-digit integers, from 100 to 998. This excludes numbers with leading zeroes (000 to 099).
How many even 3-digit numbers can be formed from digits 0 1 2 4 5 7 9 if each digit can be used only once?
To solve this question, two cases must be considered:Case 1: The three-digit even number ends with 0.If the three-digit number ends with 0, then the number must be even. After the digit 0 is used, six digits remain. After any one of these six digits is chosen to be the first digit, five digits remain. To complete the number, any of the five remaining digits could be chosen to be the second digit of the number.___6___ * ___5___ * ___1___ = 30 three-digit even numbers ending in 0.1st digit-------2nd digit----3rddigit (0)Case 2: The three-digit even number does not end with 0.If the three-digit number does not end with 0, it can end with 2 or 4. Therefore, there are two possibilities for the third digit. The first digit could be any of the remaining digits, EXCEPT 0: if 0 were the first digit, it would not be a three-digit number. Therefore, there would be five possible digits for the first digit. 0 could be used as the second digit, along with the four remaining digits that were not previously used.___5___ * ___5___ * ___2___ = 50 three-digit even numbers not ending in 0.1st digit-------2nd digit-----3rddigit (0)The total number of three-digit even numbers is 80, since 30 three-digit even numbers ending in 0 plus 50 three-digit even numbers not ending in 0 equals 80.
Which are the three numbers that are even 2 digit numbers where the sum of the digits is 5?
14, 32, and 50
The least three-digit even number that has no factor equal to 4?
102
