MCQ
The micro-organisms double themselves in 3 h. Assuming that the quantity increases at a rate proportional to itself, then the number of times it multiplies themselves in 18 yr is ______.
- A40
- B128
- ✓64
- D32
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| X = x | 0 | 1 | 2 | 3 |
| P (X = x) | `1/10` | `1/2` | `1/5` | k |
Then the value of k is
