2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 44
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55
he mean of ten numbers is 58. If one of the numbers is 40, what is the mean of the other nine?
$1,009,000
You can't find five odd numbers that add up to fifty; the sum of five odd numbers will always be odd.
7 billion in numbers looks like 7,000,000,000. There are nine zeros in one billion, so you can simply add nine zeros to 7 to get 7,000,000,000.
The next odd number after nine hundred and ninety-nine is one thousand and one. In the sequence of natural numbers, odd numbers are always one unit apart from each other. Since 999 is an odd number, the next odd number in the sequence is obtained by adding 2 to 999, resulting in 1001.
There are four even numbers between one and nine. the four even numbers are 2,4,6 and 8.
1,2,3,4,5,6,7,8,9
111 of them.
The prime numbers from one to nine are 2, 3, 5, and 7. There are nine numbers from one to nine. The probability is 4 (the number of prime numbers) over 9 (the total number of numbers). Therefore, the probability of choosing a prime number is 4/9 or about 44 percent.
Nine (2.1 to 2.9)
One. (113)
In an average Sudoku puzzle there are nine larger boxes with nine small boxes inside each. The small boxes each get a number one through nine so that each larger box has nine different numbers in it. Therefore, nine different numbers are used and 81 numbers total.
577
There is a total of 48 numbers between one and 50 that are multiples of four.
11
There are more irrational numbers in that interval than there are rational numbers in total!
In that range, only 100 has exactly 9 factors.