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What is the 39th term of the AP −19, −17/2, 2, …?समान्तर श्रेणी −19, −17/2, 2, … का 39वाँ पद क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 380380
The common difference is −17/2 − (−19) = 21/2. Using aₙ = a₁ + (n − 1)d, a₃₉ = −19 + 38 × 21/2 = 380. Therefore, option B is correct.सार्व अंतर −17/2 − (−19) = 21/2 है। सूत्र aₙ = a₁ + (n − 1)d से, a₃₉ = −19 + 38 × 21/2 = 380। इसलिए विकल्प B सही है।
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