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IBPS Clerk Series Coding Relations — practice questions

Explore 21 free Series Coding Relations questions in IBPS Clerk 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 1–21 of 21.

A person's ancestors over ten generations number 2, 4, 8, 16, up to 1024. Such an ordered list is a:Read the answer and worked solution →With a generation gap of 30 years, how many generations fit in 300 years?Read the answer and worked solution →Dividing 10 by 3 step by step gives 3, 3.3, 3.33, and so on. This sequence:Read the answer and worked solution →1, 1, 2, 3, 5, 8, and so on is generated by adding the two previous terms. It is the ___ sequence.Read the answer and worked solution →The sequence of primes 2, 3, 5, 7, and so on has no formula for its nth term, so it can only be given by:Read the answer and worked solution →A sequence can be regarded as a function whose domain is the set of:Read the answer and worked solution →The sum written from a sequence's terms, like a1 + a2 + a3 + ..., is called a:Read the answer and worked solution →The compact sigma notation for a series uses the Greek letter:Read the answer and worked solution →1 + 3 + 5 + 7 is a finite series. Its sum is:Read the answer and worked solution →For the sequence with nth term 2n + 5, the first three terms are:Read the answer and worked solution →If the common ratio r is 1, the sum of n terms of a G.P. is:Read the answer and worked solution →The 10th term of the G.P. 5, 25, 125, and so on has first term 5 and common ratio:Read the answer and worked solution →In the G.P. 2, 8, 32, and so on, the common ratio is:Read the answer and worked solution →The sum 7 + 77 + 777 + ... is handled by relating it to a G.P., because the given sequence:Read the answer and worked solution →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 →

Worked practice questions

A person's ancestors over ten generations number 2, 4, 8, 16, up to 1024. Such an ordered list is a:

  1. Sequence
  2. Plain set
  3. Matrix grid
  4. Ratio pair
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Correct answer: A. Sequence

1. The numbers come in a definite order. 2. There is a first, a second, a third member. 3. An ordered list like this is a sequence. _Source: syllabus Mathematics, Chapter 8, Sequences and Series._

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With a generation gap of 30 years, how many generations fit in 300 years?

  1. Twenty generations
  2. Ten generations
  3. Three generations
  4. Thirty generations
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Correct answer: B. Ten generations

1. Divide 300 by 30. 2. That gives 10. 3. So the ancestor sequence has ten terms. _Source: syllabus Mathematics, Chapter 8, Sequences and Series._

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Dividing 10 by 3 step by step gives 3, 3.3, 3.33, and so on. This sequence:

  1. Never ends
  2. Has ten terms
  3. Has one term
  4. Ends at 3.333
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Correct answer: A. Never ends

1. Each step adds another 3 after the decimal. 2. The division never terminates. 3. So the sequence is infinite. _Source: syllabus Mathematics, Chapter 8, Sequences and Series._

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