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IBPS PO Series Coding Relations — practice questions — page 3

Explore 75 free Series Coding Relations questions in IBPS PO Reasoning. Open each question or exercise to read its content, reference answers and available explanation.

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Series Coding Relations questions and exercises with answers

Showing questions 61–75 of 75.

A person has 2 parents, 4 grandparents, 8 great grandparents and so on. Over ten generations the ancestors total:Read the answer and worked solution →The geometric mean of 2 and 8 is:Read the answer and worked solution →2, 4, 8 are consecutive terms of a:Read the answer and worked solution →To make 1, ?, ?, ?, 256 a G.P., the three inserted numbers are:Read the answer and worked solution →For two positive numbers, the arithmetic mean A and geometric mean G satisfy:Read the answer and worked solution →If the A.M. and G.M. of two positive numbers are 10 and 8, the numbers are:Read the answer and worked solution →Bacteria in a culture double every hour. Their counts hour by hour form a:Read the answer and worked solution →Catch the sequencesRead the answer and worked solution →Pop the G.P. wordsRead the answer and worked solution →Steer into the series laneRead the answer and worked solution →Slice the sequence wordsRead the answer and worked solution →Finite or infiniteRead the answer and worked solution →Which sequence typeRead the answer and worked solution →Type the answerRead the answer and worked solution →Sequences bingoRead the answer and worked solution →

Worked practice questions

A person has 2 parents, 4 grandparents, 8 great grandparents and so on. Over ten generations the ancestors total:

  1. 1023
  2. 2046
  3. 1024
  4. 2048
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Correct answer: B. 2046

1. This is a G.P. with a equal to 2 and r equal to 2. 2. Sum ten terms. 3. The total is 2046. _Source: syllabus Mathematics, Chapter 8, Sequences and Series._

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The geometric mean of 2 and 8 is:

  1. Six
  2. Nine
  3. Four
  4. Five
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Correct answer: C. Four

1. Multiply 2 and 8 to get 16. 2. Take the square root. 3. The geometric mean is 4. _Source: syllabus Mathematics, Chapter 8, Sequences and Series._

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2, 4, 8 are consecutive terms of a:

  1. Arithmetic progression
  2. Fibonacci sequence
  3. Sequence of primes
  4. Geometric progression
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Correct answer: D. Geometric progression

1. Each term is double the previous one. 2. A constant ratio marks a G.P. 3. So 2, 4, 8 form a geometric progression. _Source: syllabus Mathematics, Chapter 8, Sequences and Series._

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