Does any one know how to do this

1. 5

2. 7

3. 4

4. 4

5. 1, 7

Step-by-step explanation:

Hi, I hope this answer helps.

1. The factors of 12 are 1, 2, 3, 4, 6, 12.

   5 is not a factor while 3 and 6 are.

2. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18.

   7 is not a factor while 9 and 1 are.

3. The factors of 18 are 1, 2, 3, 6, 9, 18.

   4 is not a factor but 6 and 1 are.

4. The factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30.

   4 is not a factor while 5 and 2 are.

5. The factors of 11 are 1, 11.

   7 and 3 are not factors while 1 is.

Cross out:

1) 5

2) 7

3) 4

4) 4

5) 7 and 3

Step-by-step explanation:

All the numbers that can be divided into the dividend and not produce a decimal number should not be crossed out. The others should.