Question
Consider the integers from `1` to `700`.
a. How many of these numbers are even?
b. How many of these numbers are divisible by `7`?
c. How many of these numbers are not divisible by `2` nor by `7`?
Answer question c.
Difficulty level (1 very easy - 10 very hard): 1
Topics:
Number Theory
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Prime Numbers
Arithmetic
Number Theory
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Modular Arithmetic / Remainder Arithmetic
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Divisibility Rules
Combinatorics
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Matchings
Number Theory
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Division
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Parity (Even/Odd)
Number Theory
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Greatest Common Divisor (GCD) and Least Common Multiple (LCM)
Set Theory
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