There are 9000 4 digit numbers
Find 4 digit numbers that are all different from 1
find 4 digit numbers that are all different from 1
The thousands digit has 8 ways to choose, hundreds, tens, and units all have 9 ways
=> there are 8 x 9 x 9 x 9 = 5832 digits
=> 4 digit numbers contain at least 1 digit 1 = number of 4 digit numbers , the number of 4 digit numbers is different by digit 1
=9000 - 5832 = 3168 numbers
There are ten (10) thousands in ten thousand.
Seven ten thousands thousands make seventy million.
ten ten-thousands
25 ten thousands
15 ten or 150 of them.
Seriously... ten of course !
1000 thousands are there in ten lakhs.
There are 70 thousands in 7 ten thousands.
30
4 of them.
70 of them.
Two of them.