2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 44
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55
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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.
Translating words into numbers is important, one billion in numbers is 1,000,000,000 . This means that it has nine zeroes behind the number one.