Verified answer

Answer:

1

Step-by-step explanation:

The greatest 3-Digit Number : 999

The smallest 4-Digit Number : 1000

On Subtracting, We Obtain 1

∴, The Difference is 1

Answer:

It is very easy , greatest 4 digit no.is 1000 and smallest 3 digit no.is 999

Step-by-step explanation:

so we can subtract 999 from 1000

so we can subtract 999 from 1000 now,

so we can subtract 999 from 1000 now, 1000 — 999 = 1