Answer:
4^{10}
Step-by-step explanation:
Complete the exponents first.
4*4=16
4*4*4*4*4*4*4*4=65536
65536
*16= 1048576
The answer is 
You can also find this if you add the exponents.
I tried to understand what you wrote
1+2/3 -1 1/6 I got 1/2
Multilpy -2 on both sides of the < sign this will get u 1x < 24 in other words x < 24
20 - 7 = 13
8 - 13 = 5
13 + 5 = 18
20 - 18 = 2
So two is your answer because.....
13 + 5 + 2 = 20