3 digit numbers are lessthan 4 digit numbers
If two digit number can have a repeated digit (eg 44) then there are 20 possible numbers, otherwise there are 16 possible numbers: There are 4 single digit numbers; With repeats allowed there are a further 4 x 4 = 16 two digit numbers making a total of 20; Without repeats allowed there are a further 4 x 3 = 12 two digit numbers making a total of 16.
A 3 or 4 digit number.
5
Any multiple of 20 between 100 and 980 inclusive.
3 digit numbers are lessthan 4 digit numbers
If two digit number can have a repeated digit (eg 44) then there are 20 possible numbers, otherwise there are 16 possible numbers: There are 4 single digit numbers; With repeats allowed there are a further 4 x 4 = 16 two digit numbers making a total of 20; Without repeats allowed there are a further 4 x 3 = 12 two digit numbers making a total of 16.
The answer is 20C4 = 20*19*18*17/(4*3*2*1) = 4845
20 of them, if repetition is not allowed.
what is the least possible sum of two 4-digit numbers?what is the least possible sum of two 4-digit numbers?
Both 10 and 20 are two-digit numbers that are factors of 20.
The probability is 1 over 20.
A 3 or 4 digit number.
what is the greatest 4-digit number you can make with the digit 0,1,2,3, and 4
possibly than 20, 3040 3041 etc 3050 3051 etc
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
20