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Earn +20 ptsQ: How many different positive four digit integers can be formed if the first digit must be even the last digit must be odd and all digits must be distinct?
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Related questions
How many positive integers less than 1000 have distinct digits and are even?
405
How many positive integers less than 1000 have distinct digits?
10*9*8=720
How many odd integers between 1000 and 9999 have distinct digits?
There are 120 of them.
What is the sum of all the digits of all the positive integers that are less than 100?
The sum of all the digits of all the positive integers that are less than 100 is 4,950.
What is the sum of positive six digit integers whose digits are a permutation of the digits in the number 123456?
279,999,720
What percentage of the first 100 positive integers contains no even digits?
50%
How many 3 digit positive integers have 5 as the product of their digits?
Three of them.
How many integers between 1000-9999 have distinct digits?
9*9*8*7 = 4536
How many positive no.s with 2 digits?
All the numbers from 10 to 99 are positive 2 digit integers
How many positive integers ar equal to 12 times the sum of their digits?
There are none.
How many positive integers less than 1000 have no odd decimal digits?
52
What are the last two digits in the sum of factorials of the first 100 positive integers?
They are 13.
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