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
Yo can
Ten to ten thusend
There are ten (10) thousands in ten thousand.
Seven ten thousands thousands make seventy million.
25 ten thousands
15 ten or 150 of them.
1000 thousands are there in ten lakhs.
30
Since 7,000 < 10,000, there are 0 ten thousands in 7,000.
There are 70 thousands in 7 ten thousands.
4 of them.
Two of them.
There are fifty of them.
7 of them.