How many natural numbers between 1 and 900 are not multiples of any of the numbers 2, 3, or 5?

• it's very simple..
  900*[(1-1/2)*(1*1/3)*(1-1/5)]
  900*(4/15)
  240..
  ans:240
• 10 years agoHelpfull: Yes(1) No(0)
• 240 numbers b/w 1 and 900 are not multiples of any of the numbers 2,3,5!
  ==> 900*(1 -1/2)*(1 - 1/3)*(1-1/5)
  ==> 900*(0.5)*(0.66667)*(0.8)
  ==> 240
• 10 years agoHelpfull: Yes(0) No(0)