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কোনটি নাইলন - 6 : 10 ?

- [C O (C H_{2})_{4} - C O H N (C H_{2})_{6} N H]_{n}

- [\overset{I I^{O}}{C} - (C H_{2})_{8} - \overset{I I^{O}}{C} - H N - (C H_{2})_{6} - N H -]_{n}

- [\overset{I I^{O}}{C} - (C H_{2})_{4} - N H] -

- [H N - (C H_{2})_{10} - \overset{I I^{O}}{C} -] n

ANS : 2

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