Two Arithmetic Progressions
Difficulty: Hard · Topics: Discrete Mathematics, Sets, Counting
A=\x : 30≤ x≤ 111,\ x=6k+3,\ k∈mathbbZ\
B=\x : 53≤ x<217,\ x=4k-7,\ k∈mathbbZ\
How many elements does the set Acup B have?
Difficulty: Hard · Topics: Discrete Mathematics, Sets, Counting
A=\x : 30≤ x≤ 111,\ x=6k+3,\ k∈mathbbZ\
B=\x : 53≤ x<217,\ x=4k-7,\ k∈mathbbZ\
How many elements does the set Acup B have?