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How many positive integers have equally many digits in the decimal representation of their square and their cube?
3
How many positive integers less than 1000 have distinct digits?
10*9*8=720
Which is greater the greatest whole number with five digits or the least whole number with 6 digits?
Integers of 6 digits are normally greater than integers of 5 digits
How many positive integers less than 1000 have distinct digits and are even?
To determine the number of positive integers less than 1000 with distinct digits and are even, we need to consider the possible combinations of digits. Since the number must be even, the last digit must be even, giving us 5 options (0, 2, 4, 6, 8). For the hundreds digit, we have 9 options (1-9), and for the tens digit, we have 8 options (0-9 excluding the hundreds digit and the last digit). Therefore, the total number of such integers is 5 * 9 * 8 = 360.
How many binary digits can one hexadecimal digit represent?
4 digits - representing 16 integers.
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
How many 3 digit positive integers have 5 as the product of their digits?
Three of them.
What percentage of the first 100 positive integers contains no even digits?
50%
How many positive integers less than 1000 have no odd decimal digits?
52
How many positive integers ar equal to 12 times the sum of their digits?
There are none.
What are the last two digits in the sum of factorials of the first 100 positive integers?
They are 13.
How many positive integers have exactly three digits?
Every number from 100 to 999 inclusive !
How many positive integers have equally many digits in the decimal representation of their square and their cube?
3
Find the sum of the digits in the smallest positive integers that is divisible by 2 and 4 and 6 and 10 and 12 and 14?
The sum of the digits is 6.
How many positive integers less than 1000 have distinct digits?
10*9*8=720
How many positive integers less than 100 have the sum of their digits equal to a perfect square?
There are 20.
