I dont think i can do the first one. but for the second one im pretty sure its 10.
Answer: 2 / 3 = 0.666666666667
No 7/8 is lager then 2/3.
2/3 = 0.6666
7/8= 0.87..
Answer:
The square root of 45 is 6.70820... (so on)
I didn't really understand your options, so I just answered myself.