How many perfect squares are there between 2 and 140​

11

Step-by-step explanation:

4, 9, 16, 25, 36, 49, 64, 81, 100, 121

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.

2x^2+5x+17

your welcome. : )