Find the missing number 4,7,12,15,20?
সঠিক উত্তরঃ
C.
23
Another Explanation (5): ```html
Missing Number Explanation
The given sequence is: 4, 7, 12, 15, 20, ?
Pattern Identification 🔍
Let's analyze the differences between consecutive numbers:
- 7 - 4 = 3
- 12 - 7 = 5
- 15 - 12 = 3
- 20 - 15 = 5
The pattern appears to be alternating additions of 3 and 5.
Extrapolation 📈
Following the pattern, the next difference should be 3.
Calculation ➕
Therefore, the missing number is 20 + 3 = 23
Summary Table 📊
| Position | Number | Difference |
|---|---|---|
| 1 | 4 | - |
| 2 | 7 | 3 |
| 3 | 12 | 5 |
| 4 | 15 | 3 |
| 5 | 20 | 5 |
| 6 | 23 | 3 |
Conclusion 🎉
The missing number is 23. The sequence follows an alternating addition pattern of 3 and 5. 🥳
Pattern observed: 3️⃣ - 5️⃣ - 3️⃣ - 5️⃣ - 3️⃣
Therefore: 20 + 3 = 23 ➕
```