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| दोषपूर्ण बल्बों की संख्या | $0$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $6$ से अधिक |
| बारंबारता | $400$ | $180$ | $48$ | $41$ | $18$ | $8$ | $3$ | $2$ |
| योग | बारंबारता |
| $2$ | $14$ |
| $3$ | $30$ |
| $4$ | $42$ |
| $5$ | $55$ |
| $6$ | $72$ |
| $7$ | $75$ |
| $8$ | $70$ |
| $9$ | $53$ |
| $10$ | $46$ |
| $11$ | $28$ |
| $12$ | $15$ |
| योग | बारंबारता |
| $2$ | $14$ |
| $3$ | $30$ |
| $4$ | $42$ |
| $5$ | $55$ |
| $6$ | $72$ |
| $7$ | $75$ |
| $8$ | $70$ |
| $9$ | $53$ |
| $10$ | $46$ |
| $11$ | $28$ |
| $12$ | $15$ |
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