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The sum of the odd numbers (from 1) up to to 500 is 62500. The sum of an arithmetic series is given by: sum = 1/2 x number_in_series x (first + last) For the odd numbers from 1 to 500, there is: number_in_series = 250 first = 1 last = 499 which gives the sum as: sum = 1/2 x 250 x (1 + 499) = 62500.
write the number that is 500 more than the biggest number that can be formed by all the odd 1 digit number
To find the odd numbers between 1 and 500, we note that they range from 1 to 499. There are 250 odd numbers in this range. Typing each odd number requires the same number of keystrokes as the number of digits in the number, which is either 1 digit (for 1-9), 2 digits (for 11-99), or 3 digits (for 101-499). The total keystrokes can be calculated as follows: 9 (1-9) + 90 (11-99) + 399 (101-499) = 498 keystrokes.
The odd digit in 14 is "1". The odd factors of 14 are 1 and 7. The odd numbers between 0 and 14 are 1,3,5,7,9,11,13.
1 is an odd number