Topic : Exponent-Inequality
from: category_eng
1.
Require some mathematics knowledge about the graph. Use exponential function's graph or polynomial graph. or Understand about the product of decimal.
2.
You should make the bases same
3.

4.
How to compare two numbers.
5.
Express mathematically.
6.
from (2), anyhow, you can find the 5^k.. Therefore, you can compare.. it's sufficient information to answer for that question. Simple modification such as 5^k+1 = 5^k *5 required for this question
7.

1. D
Understanding
Require some mathematics knowledge about the graph. Use exponential function's graph or polynomial graph. or Understand about the product of decimal.
2. B
Modification
You should make the bases same
3. B
Understanding
4. D
How to compare two numbers.
26.01=5.1^2
5. A
Express mathematically.
6. B
Understanding
from (2), anyhow, you can find the 5^k.. Therefore, you can compare.. it's sufficient information to answer for that question. Simple modification such as 5^k+1 = 5^k *5 required for this question
7. D