IB ACIO Grade II practice question
In the series 13, 16, 28, 76, ?, starting from the 1st term, to get the next term the digit-product of the current term is multiplied by the step number (1st step, 2nd step, ...) and added to the current term. What number will replace the question mark?
From a IB ACIO Grade II Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (D) 244
The rule is: starting from the 1st term, to get the next term the digit-product of the current term is multiplied by the step number (1st step, 2nd step, ...) and added to the current term. Here, digit-product of 76 is 42; step number is 4; so next term = 76 + (42 × 4) = 76 + 168 = 244. Full series: 13, 16, 28, 76, 244.
हिंदी में प्रश्न
श्रृंखला 13, 16, 28, 76, ? में, पहले पद से शुरू करते हुए, अगला पद पाने के लिए वर्तमान पद के अंकों के गुणनफल को चरण-संख्या (1, 2, 3, ...) से गुणा करके वर्तमान पद में जोड़ा जाता है है। प्रश्न-चिह्न के स्थान पर कौन-सी संख्या आएगी?
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सही उत्तर: (D) 244
नियम है: पहले पद से शुरू करते हुए, अगला पद पाने के लिए वर्तमान पद के अंकों के गुणनफल को चरण-संख्या (1, 2, 3, ...) से गुणा करके वर्तमान पद में जोड़ा जाता है। यहाँ, 76 के अंकों का गुणनफल 42 है; चरण-संख्या 4 है; अतः अगला पद = 76 + (42 × 4) = 76 + 168 = 244 होगा। पूरी श्रृंखला: 13, 16, 28, 76, 244।
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