Find how many positive integers with exactly four decimal digits, that is, positive integers between 1000 and 9999 inclusive, have the following properties:(a) are not divisible by either 5 or 7.   (b) are divisible by 5 or by 7 (inclusive or). (c) are divisible by 5 and by 7. (d) are divisible by 7.

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Q: are there any even numbers greater than 2 which are prime? why or why not?

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Q: Find how many positive integers with exactly four decimal digits, that is, positive integers between…

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Q: i need the last one, thank you

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Q: 1. How many positive integers of 5-digit-number can be formed from the prime numbers starting at 1…

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Q: Determine the identity element of the set N={1,2,3,..} of positive integers with addition.

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Q: Discrete

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Q: 5. How many positive integers between 50 and 100 a) are divisible by 7? Which integers are these? b)…

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Q: find all possible three-digit numbers that are of the form 75_ and are divisible by both 3 and 2

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Q: How many positive integers between 50 and 100 a) are divisible by 7? Which integers are these? b)…

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Q: Find how many positive integers with exactly four decimal digits, that is, positive integers between…

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Q: Q7. How many positive integers not exceeding 100 are divisible either by 6 or by 10?

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Q: The sum of all positive integers less than 400 which are divisible by 5.

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Q: How many integers from 1 to 99,999 contain exactly two consecutive 1s?

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Q: How many positive integers between 100 and 999 inclusive a) are divisible by 7? b) are odd? c)…

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Q: find the sum of all integers between 300 and 800 that are exactly divisible by 14

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Q: that the set of negative integers divisible by 3 is countable

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Q: Find the sum of all  natural numbers between 250 and 1000 which are exactly divisible

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Q: How many four-digit positive integers both start and end in even digits:

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