Direction: Read and analyze each question carefully and choose the letter of the correct answer.

1. The following numbers below are irrational except___?
A.√625
B. √13
C. √8
D. 1.414213562...

2. Which of the following is a rational number?
A. √50
B. V64
C. √11
D. √8

3. Which of the following is an irrational number?
A. ⅞
B. √25
C. √23
D. 0.333

4. What is the estimated principal root of √13
A. 3.62
B. 3.60
C. 3.59
D. 3.61

5. If the radical is not a perfect square, then the principal square root is______.
A. irrational
B. a perfect square
C. rational
D. cannot be determined​