How many multiple?
Number Theory
Level
1
How many multiples of 7 are between 345 and 563 inclusive?
27
30
31
32
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Let n be the number of multiples of 7 between 3 4 5 and 5 6 3 :
n = ⌈ 7 5 6 3 ⌉ − ⌈ 7 3 4 5 ⌉ = 8 1 − 5 0 = 3 1