how many numbers between 190 and 580 are divisible by 45 and 6 ?
every such number must be divisible by l . c . m of 4 , 5,6 i . e , 60 . such numbers are 240,300 , 360,420 , 480,540 . clearly , there are 6 such numbers answer : a
subtract(floor(divide(subtract(580, 190), 45)), const_2)