A choir teacher is dividing 15 sopranos and 36 altos into the singing groups. He wants each group to have the same combination of sopranos and altos, with no singers left over. What is the greatest number of groups?​

3 groups of 5 sopranos and 12 altos

Step-by-step explanation:

the answer for this question is 38

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.