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Simple counting
Select the type of pattern
Addition
Subtraction
Select minimum value
1
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1800
1850
1900
1950
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2050
2100
2150
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2250
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2450
2500
2550
2600
2650
2700
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2800
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2950
3000
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3100
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3200
3250
3300
3350
3400
3450
3500
3550
3600
3650
3700
3750
3800
3850
3900
3950
4000
Select maximum value
1
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950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1550
1600
1650
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
2300
2350
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
2950
3000
3050
3100
3150
3200
3250
3300
3350
3400
3450
3500
3550
3600
3650
3700
3750
3800
3850
3900
3950
4000
Select a block number
3
4
5
Select skip count by
1
2
3
4
5
6
7
8
9
10
Up to 4
Up to 7
Up to 10
Select number of problems
10
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Show answers
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