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How many positive integers less than 1000 have distinct digits?
10*9*8=720
Which has more elements the set of positive odd integers less than 50 or the set of positive even integers less than 50?
The set of positive odd integers.
How many positive integers less than 1000 are there such that the digits are not strictly increasing order from left to right?
There are 870 such numbers.
How many positive integers are there less than 10000?
One less than 10000.
What are the positive integers less than 11?
The positive integers less than 11 are the natural numbers 1-10.That is to say 1,2,3,4,5,6,7,8,9 and 10.
How many positive integers less than 1000 are not divisible by 3?
666 integers.
How many positive integers less than 1000 are divisible by 7 and are not divisible by 11?
There are 130 positive integers less than 1,000 that are divisible by seven but not divisible by 11
How many positive integers less than 1000 are either divisible by 2 or by 11?
There are 544 positive integers less than 1,000 that are either divisible by two or by 11.
How many positive integers less than 1000 have no odd decimal digits?
52
How many positive integers less than 1000 are not divisible neither by 2 or 3?
332
How many positive integers less than 1000 are divisible by 7 but not by 11?
130 numbers
How many positive integers less than 1000 are not divisible neither by 2 nor 3?
334 of them.
How many positive integers less than 1000 have distinct digits?
10*9*8=720
Which has more elements the set of positive odd integers less than 50 or the set of positive even integers less than 50?
The set of positive odd integers.
What is the Sum of the positive non-multiples of three that are less than 1000?
That would be equal to the sum of all positive integers less than 1000 minus the sum of all positive multiples of three that are less than 1000. That would be equal to: (1000 + 1) * (1000 / 2) - 3 * (333 + 1) * (333 / 2) = 1001 * 500 - 1000 * 166.5 = 500500 - 166500 = 334000
How many positive integers less than 1000 are there such that the digits are not strictly increasing order from left to right?
There are 870 such numbers.
How many positive integers less than 1000 are 6 times the sum of their digits?
There is only 1, the number 54.
