#2

#6**+2 **

Example:

How many integers less than or equal to 20 are divisible by 2? 5? or 10?

20/2 = 10

2, 4, 6, 8, 10, 12, 14, 16, 18, 20

20/5 = 4

5, 10, 15, 20

20/10 = 2

10, 20

10 + (4/2)_{because every 2 numbers there is a even number} - 2 = 10

____________________________________________________________

**Now apply the same to 10,000**

AnExtremelyLongName Apr 24, 2020

#9**+1 **

For your example question, you have the right answer, but the wrong reason.

10+4-2 = 12

Because you have counted 10 and 20 twice.

Melody
Apr 25, 2020

#11**+1 **

Thanks! Not gonna edit it because people can learn from my mistake.

AnExtremelyLongName
Apr 27, 2020

#7**+1 **

a=0;b=0;c=0;d=0;p=0; cycle:n=a*1000+b*100+c*10+d;if(n%2==0 or n%5==0 or n%10==0, goto loop, goto next); loop:printn,", ",;p=p+1; next:d++;if(d<10, goto cycle, 0);d=0;c++;if(c<10, goto cycle, 0);d=0;c=0;b++;if(b<10, goto cycle,0);b=0;c=0;d=0;a++;if(a<10, goto cycle,0);print"Total = ",p

**OUTPUT = 6,000 such integers.**

Guest Apr 24, 2020

#8

#10**+1 **

Thanks for everyone's help! I really appreciate it. I got it. Have a nice day! :D

somehelpplease Apr 25, 2020