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Name Subject Level Section Exercise Lesson
Sample User Math 1 Patterns and Sequences Find a missing number between 0 and 20 166

You have 20 minutes to finish this exercise
Name	Subject	Level	Section	Exercise	Lesson
Sample User	Math	1	Patterns and Sequences	Find a missing number between 0 and 20	166

Click on the appropriate choice. When done, click on the submit button.
Find the missing number.
14		16	17
18	17	16
17		15	14
3		5	6
13	14	15
13		15	16
20	19	18
	18	17	16
20		18	17
16	15		13
	16	17	18
6	7	8
	8	9	10
14	15	16
17	18		20
3	4		6
12	13	14
2	3		5
16	17		19
16	17	18
	17	16	15
20	19		17
17	16	15
	5	6	7
1		3	4
15	14	13
1	2	3
14	13		11
	2	3	4
4		6	7
11	12	13
14		12	11
7		9	10
19	18	17
15	16	17
14	13	12
13	14		16
6	7		9
	8	7	6
5	6		8
19		17	16
	4	5	6
	6	7	8
3	4	5
2	3	4
	16	15	14
15	16		18
2		4	5
17		19	20
6		8	9
14	15		17
	9	8	7
	7	8	9
10	9		7
4	5	6
	3	4	5
17	18	19
15	14		12
7	8		10
16		14	13
15		17	18
16	15	14
11		13	14
12	13		15
9	8		6
12		14	15
5		7	8
10	9	8
9		7	6
18	17		15
	13	14	15
	14	13	12
15		13	12
	13	12	11
17	16		14
	15	16	17
1	2		4
	18	19	20
	19	18	17
4	5		7
5	6	7
	14	15	16
	17	18	19
11	12		14
	15	14	13
18		16	15
9	8	7
	12	13	14
7	8	9
16		18	19
10		8	7
19	18		16

Find the missing number.
14		16	17
18	17	16
17		15	14
3		5	6
13	14	15
13		15	16
20	19	18
	18	17	16
20		18	17
16	15		13
	16	17	18
6	7	8
	8	9	10
14	15	16
17	18		20
3	4		6
12	13	14
2	3		5
16	17		19
16	17	18
	17	16	15
20	19		17
17	16	15
	5	6	7
1		3	4
15	14	13
1	2	3
14	13		11
	2	3	4
4		6	7
11	12	13
14		12	11
7		9	10
19	18	17
15	16	17
14	13	12
13	14		16
6	7		9
	8	7	6
5	6		8
19		17	16
	4	5	6
	6	7	8
3	4	5
2	3	4
	16	15	14
15	16		18
2		4	5
17		19	20
6		8	9
14	15		17
	9	8	7
	7	8	9
10	9		7
4	5	6
	3	4	5
17	18	19
15	14		12
7	8		10
16		14	13
15		17	18
16	15	14
11		13	14
12	13		15
9	8		6
12		14	15
5		7	8
10	9	8
9		7	6
18	17		15
	13	14	15
	14	13	12
15		13	12
	13	12	11
17	16		14
	15	16	17
1	2		4
	18	19	20
	19	18	17
4	5		7
5	6	7
	14	15	16
	17	18	19
11	12		14
	15	14	13
18		16	15
9	8	7
	12	13	14
7	8	9
16		18	19
10		8	7
19	18		16

Find the missing number.
14		16	17
18	17	16
17		15	14
3		5	6
13	14	15
13		15	16
20	19	18
	18	17	16
20		18	17
16	15		13
	16	17	18
6	7	8
	8	9	10
14	15	16
17	18		20
3	4		6
12	13	14
2	3		5
16	17		19
16	17	18
	17	16	15
20	19		17
17	16	15
	5	6	7
1		3	4
15	14	13
1	2	3
14	13		11
	2	3	4
4		6	7
11	12	13
14		12	11
7		9	10
19	18	17
15	16	17
14	13	12
13	14		16
6	7		9
	8	7	6
5	6		8
19		17	16
	4	5	6
	6	7	8
3	4	5
2	3	4
	16	15	14
15	16		18
2		4	5
17		19	20
6		8	9
14	15		17
	9	8	7
	7	8	9
10	9		7
4	5	6
	3	4	5
17	18	19
15	14		12
7	8		10
16		14	13
15		17	18
16	15	14
11		13	14
12	13		15
9	8		6
12		14	15
5		7	8
10	9	8
9		7	6
18	17		15
	13	14	15
	14	13	12
15		13	12
	13	12	11
17	16		14
	15	16	17
1	2		4
	18	19	20
	19	18	17
4	5		7
5	6	7
	14	15	16
	17	18	19
11	12		14
	15	14	13
18		16	15
9	8	7
	12	13	14
7	8	9
16		18	19
10		8	7
19	18		16

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Questionnaire

Find the missing number.
14		16	17
18	17	16
17		15	14
3		5	6
13	14	15
13		15	16
20	19	18
	18	17	16
20		18	17
16	15		13
	16	17	18
6	7	8
	8	9	10
14	15	16
17	18		20
3	4		6
12	13	14
2	3		5
16	17		19
16	17	18
	17	16	15
20	19		17
17	16	15
	5	6	7
1		3	4
15	14	13
1	2	3
14	13		11
	2	3	4
4		6	7
11	12	13
14		12	11
7		9	10
19	18	17
15	16	17
14	13	12
13	14		16
6	7		9
	8	7	6
5	6		8
19		17	16
	4	5	6
	6	7	8
3	4	5
2	3	4
	16	15	14
15	16		18
2		4	5
17		19	20
6		8	9
14	15		17
	9	8	7
	7	8	9
10	9		7
4	5	6
	3	4	5
17	18	19
15	14		12
7	8		10
16		14	13
15		17	18
16	15	14
11		13	14
12	13		15
9	8		6
12		14	15
5		7	8
10	9	8
9		7	6
18	17		15
	13	14	15
	14	13	12
15		13	12
	13	12	11
17	16		14
	15	16	17
1	2		4
	18	19	20
	19	18	17
4	5		7
5	6	7
	14	15	16
	17	18	19
11	12		14
	15	14	13
18		16	15
9	8	7
	12	13	14
7	8	9
16		18	19
10		8	7
19	18		16