1,3,5,7,9,11,13
64
The sum of the first 100 odd numbers (1 through 199) is 10000 (ten thou)
The sum of the first 300 odd numbers is 90,000
The sum of the first 40 odd numbers is 1,600.
The sum of the first 15 odd numbers is 225.
64
the answer is 49.
The sum of the first 100 odd numbers (1 through 199) is 10000 (ten thou)
The sum of the first 300 odd numbers is 90,000
The sum of the first 1,000 odd numbers is 1,000,000.
The sum of the first 40 odd numbers is 1,600.
The sum of the first 50 odd numbers is 2,500.
The sum of the first 153 odd numbers is 23,409.
The sum of the first 8,000 odd numbers 64,000,000.
The sum of the first 15 odd numbers is 225.
The sum of the first 600 odd numbers is 360,000.
The sum of the first nine odd numbers is 81.