Between which two numbers does 11−−√ lie on a number line?

Question

Between which two numbers does 11−−√ lie on a number line?

A. 4 and 5

B. 5 and 6

C. 10 and 11

D. 3 and 4

Answer 1

It is unclear what "11--√" means. I'm guessing √11.

Closest perfect squares to 11 are 9 and 16. √9=3 and √16 = 4. So the answer is D.