Question
मान लीजिए कि P(A) = P(B), सिद्ध कीजिए कि A = B
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| अंक | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 | 70-80 |
| समूह A | 9 | 17 | 32 | 33 | 40 | 10 | 9 |
| समूह B | 10 | 20 | 30 | 25 | 43 | 15 | 7 |