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In the sequence (2,5,11,23,47,\ldots), each next term is double the previous term plus (1). What is the next term?
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Answer and explanation
Correct answer: 95
The rule is: next term = twice the previous term + 1. Therefore, the term after 47 is \(2\times47+1=94+1=95\). Option 94 is only twice 47; it misses the required addition of 1. Exam tip: apply the stated rule directly to the last given term to verify the answer.
Frequently asked questions
What is the correct answer to this question?
95
Why is this the correct answer?
The rule is: next term = twice the previous term + 1. Therefore, the term after 47 is \(2\times47+1=94+1=95\). Option 94 is only twice 47; it misses the required addition of 1. Exam tip: apply the stated rule directly to the last given term to verify the answer.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: Sequences.
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