How many natural numbers, below 600, are not divisible by 9 or 5 but are divisible by 8?

600*(8/9)*(4/5)*(1/8)

@YB, the numbers which aren't divisible by 9 can be written as 1-(1/9)=8/9.... similarly for 5 its 1-1/5=4/5... Whereas for the ones which are divisble by 8 we can use 1/8 directly

you can solve it using Euler

53

Pooja , can you explain the logic behind your process looks simple

53

22

53?