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You have 20 minutes to finish this exercise
Name Subject Level Section Exercise Lesson
Sample User Math 0 Patterns of Numbers Find a missing number - 1 up to 20 28

You have 20 minutes to finish this exercise
Name	Subject	Level	Section	Exercise	Lesson
Sample User	Math	0	Patterns of Numbers	Find a missing number - 1 up to 20	28

Click on the appropriate choice. When done, click on the submit button.
Enter the missing number from the sequence
	18	19	20
	17	18	19
11	12	13
14	15	16
13	14	15
	14	15	16
	12	13	14
17	18	19
	16	17	18
15		17	18
16	17	18
	13	14	15
17	18		20
12	13	14
11	12		14
14	15		17
12		14	15
16		18	19
16	17		19
13		15	16
15	16	17
14		16	17
13	14		16
	15	16	17
17		19	20
15	16		18
11		13	14
12	13		15

Enter the missing number from the sequence
	18	19	20
	17	18	19
11	12	13
14	15	16
13	14	15
	14	15	16
	12	13	14
17	18	19
	16	17	18
15		17	18
16	17	18
	13	14	15
17	18		20
12	13	14
11	12		14
14	15		17
12		14	15
16		18	19
16	17		19
13		15	16
15	16	17
14		16	17
13	14		16
	15	16	17
17		19	20
15	16		18
11		13	14
12	13		15

Enter the missing number from the sequence
	18	19	20
	17	18	19
11	12	13
14	15	16
13	14	15
	14	15	16
	12	13	14
17	18	19
	16	17	18
15		17	18
16	17	18
	13	14	15
17	18		20
12	13	14
11	12		14
14	15		17
12		14	15
16		18	19
16	17		19
13		15	16
15	16	17
14		16	17
13	14		16
	15	16	17
17		19	20
15	16		18
11		13	14
12	13		15

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Questionnaire

Enter the missing number from the sequence
	18	19	20
	17	18	19
11	12	13
14	15	16
13	14	15
	14	15	16
	12	13	14
17	18	19
	16	17	18
15		17	18
16	17	18
	13	14	15
17	18		20
12	13	14
11	12		14
14	15		17
12		14	15
16		18	19
16	17		19
13		15	16
15	16	17
14		16	17
13	14		16
	15	16	17
17		19	20
15	16		18
11		13	14
12	13		15