use the digit 1234to make two different numbers
That makes:* 8 options for the first digit * 8 options for second digit * 10 options for the third digit * ... etc. Just multiply all the numbers together.
69
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.
5 and -3
732-469= 263
1 and 263.
100 and 363, 101 and 364, 102 and 365, ... Take your pick!
There are 21 two-digit prime numbers.
12,13,14 21,23,24 31,32,34 43,42,41 12 two-digit numbers
40 and 43, among others.
what is the least possible sum of two 4-digit numbers?what is the least possible sum of two 4-digit numbers?
Two of them are: 6*263 = 1578
To make the list of two-digit numbers with digits that add up to 10, first write the pairs of single-digit integers that add up to 10. They are (1,9), (2,8), (3,7), (4,6), (5,5). Then recognize that each of these pairs of numbers, except 5, can be combined in two different ways to make two-digit numbers that satisfy the problem. 19 and 91 28 and 82 37 and 73 46 and 64 55 So there are nine two-digit numbers with digits that add up to 10.
The only two numbers that represent a binary digit are 0 and 1
7 two-digit numbers.
There are five such numbers.