There is no underlined digit.
There is no underlined digit.
There is no underlined digit.
There is no underlined digit.
999-111=888 888 3 digit numbers can be made with numbers between 1 - 9
well the first 9 digit number is 100 million 100,000,000 the last 9 digit number is 999 million 999,999,999 just minus the two numbers and you get... 899,999,999 so there are around 900 million 9 digit numbers.
9
Oh, what a happy little question! To find how many 4-digit numbers are multiples of 9, we need to see how many multiples of 9 fall between 1000 and 9999. To do this, we divide the range's endpoints by 9 and subtract the whole numbers in between. By doing this gentle math, we can find the number of delightful 4-digit numbers that are multiples of 9.
Oh, dude, there are 90 two-digit numbers you can make from 0 to 9. You've got 10 options for the first digit (0-9) and 9 options for the second digit (0-9 excluding the one you already picked for the first digit). So, like, 10 times 9 equals 90. Math can be fun when you're making numbers do the cha-cha.
9000000 if it's the first 9 9334209 if it's the second 9
Ah, let's take a moment to appreciate that wonderful number. The underlined digit 9 in 81393374215 is in the millions place, so we can write its value in short word form as "nine million." Just imagine all the happy little trees and fluffy clouds that number could represent!
There are no 3 digit numbers between 0 and 9 because 0 and 9 are 1 digit numbers.
There are 9 digits that can be the first digit (1-9); for each of these there is 1 digit that can be the second digit (6); for each of these there are 10 digits that can be the third digit (0-9); for each of these there are 10 digits that can be the fourth digit (0-9). → number of numbers is 9 × 1 × 10 × 10 = 900 such numbers.
-- Look at the digit that is underlined. Stare at it. Fix it in your mind's eye. Be sure you know clearly which digit it is, and don't forget it. -- Now look at the digit to the right of it. Is that one a ' 5 ' or more ? . . . . . If the digit is a ' 5 ' or more, then increase the underlined digit by ' 1 '. . . . . . If the digit is less than a ' 5 ', then do nothing, and go on to the next step. -- Now, change all digits to the right of the underlined one to ' zero '. -- The assignment is complete.
You can select 9 numbers for the first digit, 8 numbers for the second digit, and 7numbers for the third digit; so 504 (e.g. 9*8*7) different three digit numbers can be written using the digits 1 through 9.
There are 9 possible numbers for the first digit (one of {1, 2, ..., 9}); with 9 possible digits for the second digit (one of {0, 1, 2, ..., 9} which is not the first digit)); with 8 possible digits for the third digit (one of {0, 1, 2, ..., 9} less the 2 digits already chosen); This there are 9 × 9 × 8 = 648 such numbers.
There are 16 4-digit numbers that can be made up from 9 and 6.
There are 9000 4-digit numbers. 8*9*9*9 = 5832 of them do not contain a 5 The remaining 3168 contain a 5.
999-111=888 888 3 digit numbers can be made with numbers between 1 - 9
-5
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