Brain Teasers
T4 and D4
D4 was trying to impress everyone at T4's birthday party by giving T4 a math problem. Celebrating 1994, T4's birth year, what is the 1994th digit in the decimal expansion of 1/7 to the right of the decimal point?
Hint
Actually do the math for a bit...Answer
4.Any number not a multiple of 7 will divide out with the pattern 1,4,2,8,5, and 7. 1/7 is simply 0.1428571428571428571428757... Divide 1994 by 6 and get 332 with remainder 2. 4 is the second digit of the six-digit pattern, so it is also the 1994th digit.
Hide Hint Show Hint Hide Answer Show Answer
What Next?
View a Similar Brain Teaser...
If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own.
Solve a Puzzle
Comments hidden to avoid spoilers.
Follow Braingle!