Question

22. How many positive integers less than 1000 a) are divisible by 7? B) are divisible by 7 but not by 11? C) are divisible by both 7 and 11? D) are divisible by either 7 or 11? E) are divisible by exactly one of 7 and 11? F ) are divisible by neither 7 nor 11? G) have distinct digits? H) have distinct digits and are even?

Answer 1

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