Question

Find the least number which when.increased by one is exactly divisible by24,32 and 40

Answer 1

LCM of 24,32 and 40

24= 2×2×2×3

32=2×2×2×2×2

40=2×2×2×5

LCM= 2×2×2××2×2×3×5

=480

So the least number=480-1=479