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| 1. |
`""^19C_(1) + ""^(18)C_(1) + ""^(17)C_(1) + ""^(17)C_(2)` का मान हैA. ` ""^(20)C_(2)`B. `""^(18)C_(2)`C. `""^(17)C_(5)`D. `""^(19)C_(5)` |
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