Let's solve each pattern step by step and explain the reasoning behind each.
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a. □ ○ ○ □ ○ ○ □ ○ ○ □ ___ ___ ___
Pattern:
Look at the sequence:
□ ○ ○ □ ○ ○ □ ○ ○ □
We can break it into groups:
(□ ○ ○) (□ ○ ○) (□ ○ ○) (□)
So, the repeating unit is
□ ○ ○, which repeats every 3 shapes.
- After the last □, we expect the next two to be ○ ○.
- Then the pattern would repeat again with □.
But since there are only three blanks, let’s count:
After the last □ (the 10th shape), the pattern continues:
- 11th: ○
- 12th: ○
- 13th: □
✔ So, fill in:
○ ○ □
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b. ↑↓↑↓↑↓↑↓↑↓↑↓___ ___ ___
This one is alternating arrows:
↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓
Clearly, the pattern is
↑ ↓, repeating every 2 shapes.
Last shape is ↓ (12th shape). So:
- 13th: ↑
- 14th: ↓
- 15th: ↑
✔ Fill in:
↑ ↓ ↑
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c. A B A C A D A E A F A ___ ___ ___
Let’s look closely:
A B A C A D A E A F A
Break it down:
- A B
- A C
- A D
- A E
- A F
- A ?
Notice that after each "A", a new letter appears: B, C, D, E, F...
So the pattern is:
A + next letter in alphabet → then back to A
Sequence of letters after A:
B, C, D, E, F → next should be
G
Then again: A G
So after the last A (the 11th letter), we expect:
- 12th: G
- 13th: A
- 14th: H? Wait — let’s double-check.
Wait — the full sequence is:
1. A
2. B
3. A
4. C
5. A
6. D
7. A
8. E
9. A
10. F
11. A
So positions:
Odd positions (1,3,5,7,9,11): all
A
Even positions (2,4,6,8,10): B, C, D, E, F → increasing alphabet
So:
- 12th (even): should be
G
- 13th (odd):
A
- 14th (even):
H
But we have only 3 blanks after the 11th shape.
So:
- 12th: G
- 13th: A
- 14th: H
✔ Fill in:
G A H
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d. ◆◇◆◇◆◇◆◇◆◇◆◇___ ___ ___
Pattern:
◆ ◇ ◆ ◇ ◆ ◇ ◆ ◇ ◆ ◇ ◆ ◇
Repeating pair:
◆ ◇
It alternates every shape.
Last shape is ◇ (12th shape)
So:
- 13th: ◆
- 14th: ◇
- 15th: ◆
✔ Fill in:
◆ ◇ ◆
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e. 1 2 3 8 2 1 1 2 3 8 2 1 1 2 3 8 2 1 ___ ___ ___
This one looks more complex.
List the numbers:
Position:
1: 1
2: 2
3: 3
4: 8
5: 2
6: 1
7: 1
8: 2
9: 3
10: 8
11: 2
12: 1
13: 1
14: 2
15: 3
16: 8
17: 2
18: 1
19: ?
20: ?
21: ?
Now look for repeating patterns.
Group them:
From position 1–6: 1 2 3 8 2 1
Then 7–12: 1 2 3 8 2 1
Then 13–18: 1 2 3 8 2 1
Wait! Let’s check:
- 1–6: 1 2 3 8 2 1
- 7–12: 1 2 3 8 2 1
- 13–18: 1 2 3 8 2 1
Yes! It's repeating
1 2 3 8 2 1 every 6 numbers.
So the cycle is:
1 2 3 8 2 1 (length 6)
Now check:
- 19th: start of next cycle →
1
- 20th:
2
- 21st:
3
✔ Fill in:
1 2 3
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✔ Final Answers:
a. ○ ○ □
b. ↑ ↓ ↑
c. G A H
d. ◆ ◇ ◆
e. 1 2 3
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Summary of Patterns:
| Problem | Pattern | Next 3 |
|--------|--------|--------|
| a | □ ○ ○ repeats | ○ ○ □ |
| b | ↑ ↓ repeats | ↑ ↓ ↑ |
| c | A followed by increasing letter (B,C,D,...) | G A H |
| d | ◆ ◇ repeats | ◆ ◇ ◆ |
| e | 1 2 3 8 2 1 repeats | 1 2 3 |
You can now fill in the blanks on the worksheet accordingly.
Parent Tip: Review the logic above to help your child master the concept of worksheet with pattern.