2 / 1386
3 / 693
3 / 231
7 / 77
11/ 11
/ 1
Prime factors = 2*3*3*7*11
Option C.
He typed faster the second time because if you multiple 60 minutes by 1/10 and 1/12 of and hour separately, you get a smaller answer with 1/12 than by 1/10, and thereby a smaller answer.
Hope this helps!
-4 I believe is the answer
The scientific notation used to write 1,000,000 would be 1 X 10^6.
1 X 10^6.
