Question

How many 6 digit number are there in all ?????​

Answer 1

The first 6 digit number is 10 raised to 5.

(because there are 5 0's)

The last 6 digit number is, 10 raised to 6 minus 1.

(The first 7 digit number is 10 raised to 6.)

Formula to count numbers

Biggest - Smallest + 1 = Total

example

Quantities of numbers between 10 and 1 is 10 - 1 + 1 = 10

(10⁶ - 1) - (10⁵) + 1 = (10⁶ - 10⁵) + (1 - 1) = 10⁵ × (10 - 1) = 9 × 10000 = 90000

90000 numbers are there.

Answer 2

Answer:

There are 900000 six digit numbers in all.