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What number would replace the question mark (?) in the series given below? 1, 6, 18,…

Paper 1 · Mathematical Reasoning and Aptitude UGC NET December 2023
नीचे दी गई श्रृंखला में प्रश्नवाचक चिह्न (?) के स्थान पर कौन सी संख्या आएगी? 1, 6, 18, 44, 98, 208, 430, ?
A638
B876 ✓ Correct
C896
D999
Answer: B
Explanation. अंतर 5, 12, 26, 54, 110, 222 स्वयं ऐसे मानों से बढ़ते हैं जो दोगुने होते जाते हैं (7, 14, 28, 56, 112), इसलिए अगला अंतर 446 है तथा 430+446 = 876। अतः विकल्प B।

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