500. Since they alternate, half the numbers between 1 and 1000 are odd and the other half are even. Adding zero to the list does not change the number of odds.
Thirteen.
They are all the 4 digit numbers starting with 1 and ending with 1, 3, 5, 7 or 9. Since there are 500 of them, I will not list them.
Infinity
odd multiples of 7 are odd numbers.. like 7*1, 7*3,7*5..
500
26
The sum of all the odd numbers between 1 and 499 is 62500, because there are 125 pairs adding up to 500. 125 x 500 = 62500
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.
There are 48/2 + 1 = 25 odd numbers in 1 to 49, inclusive.
500. Since they alternate, half the numbers between 1 and 1000 are odd and the other half are even. Adding zero to the list does not change the number of odds.
Thirteen.
write the number that is 500 more than the biggest number that can be formed by all the odd 1 digit number
They are all the 4 digit numbers starting with 1 and ending with 1, 3, 5, 7 or 9. Since there are 500 of them, I will not list them.
37
32
201