339. How many positive integers less than 5,000 are evenly divisible by neither 15 nor 21?
A. 4,514
B. 4,475
C. 4,521
D. 4,428
E. 4,349
A. 4,514
B. 4,475
C. 4,521
D. 4,428
E. 4,349
Answer is 4999(positive integers < 5000) - ( (5000/15)(divisible by 15) + (5000/21)(divisible by 21) - (5000/105)(divisible by 105, need to subtract as has been counted twice before)) = 4475. .....Just take integer values and ignore the decimal part.
Answer B.
