Privacy Policy

Terms & Conditions

See Details This website uses cookies. By using this website you are accepting the use of cookies. For more information please view our privacy policy.
A. 101011000011110
B. 101111110010110011
C. 100001111110011110100
D. 110100101111011101
E. 11100010011100101
F. 1101111110010111111111111
G. 11010111011010011
H. 10100111111101111
I. 1000011110111011
J. 1101111111101111111110010011
Hint: Add the first number to the last  does this help?
Answer: 500,500.
It's easiest to see that the first and last number are 1 and 1000, which add to 1001.
The next two numbers we can add are 2 and 999, which add to 1001.
The next two numbers to add are 3 and 998, which add to 1001.
We can keep doing this 500 times, and in each case they add to 1001.
And 500 x 1001 = 500,500.
BrainBashers™ is a trademark. This website uses cookies. By using this website you are accepting the use of cookies. For more information please view our privacy policy. By using this website you are also agreeing to our terms and conditions.