Start learning →

NMAT Coding Decoding — practice questions — page 2

Explore 45 free Coding Decoding questions in NMAT Reasoning. Open each question or exercise to read its content, reference answers and available explanation.

Practise Coding Decoding with Quill →

Coding Decoding questions and exercises with answers

Showing questions 31–45 of 45.

Complete the geometric progression ruleRead the answer and worked solution →Spotting the ruleRead the answer and worked solution →Constant difference, or constant ratio?Read the answer and worked solution →Order the steps: crack a number seriesRead the answer and worked solution →True or false: geometric progressionsRead the answer and worked solution →Finding a termRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Tap every sequence with a constant ratioRead the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Finite or infinite?Read the answer and worked solution →Complete the geometric meanRead the answer and worked solution →True or false: reading a series questionRead the answer and worked solution →

Worked practice questions

Complete the geometric progression rule

Read exercise and reference answers
Missing parts
  1. Answer
    ratio
    Choices
    1. ratio
    2. difference
    3. sum
  2. Answer
    ratio
    Choices
    1. ratio
    2. difference
    3. factor
  3. Answer
    1
    Choices
    1. 1
    2. 2
    3. 0
Complete the statement
A sequence is a geometric progression if the {0} of any term to its preceding term is the same throughout. That constant is called the common {1}, and the nth term is given by a·r^(n−{2}).
In a GP the RATIO between neighbours stays fixed, which is the pattern behind many series items. Source: syllabus Maths, Ch 9 Sequences and Series.

Open this exercise →

Spotting the rule

Read exercise and reference answers
Questions
  1. Question
    2, 6, 18, 54 — each term is the previous one
    Choices
    1. times 3
    2. plus 4
    3. squared
    Correct choice
    times 3
  2. Question
    That makes it a
    Choices
    1. arithmetic progression
    2. geometric progression
    3. random list
    Correct choice
    geometric progression
  3. Question
    Its common ratio is
    Choices
    1. 4
    2. 2
    3. 3
    Correct choice
    3
  4. Question
    The next term after 54 is
    Choices
    1. 162
    2. 108
    3. 58
    Correct choice
    162
Number-series items are solved by naming the rule linking neighbours. Source: syllabus Maths, Ch 9 Sequences and Series.

Open this exercise →

Constant difference, or constant ratio?

Read exercise and reference answers
Items
  1. Item
    3, 7, 11, 15
    Category
    Constant difference
  2. Item
    Each term adds a fixed amount
    Category
    Constant difference
  3. Item
    5, 10, 15, 20
    Category
    Constant difference
  4. Item
    2, 6, 18, 54
    Category
    Constant ratio
  5. Item
    Each term multiplies by a fixed amount
    Category
    Constant ratio
  6. Item
    3, 9, 27, 81
    Category
    Constant ratio
Categories
  1. Item
    Constant difference
  2. Item
    Constant ratio
Adding the same amount each time is one pattern multiplying by the same amount is another. Telling them apart is the first move. Source: syllabus Maths, Ch 9 Sequences and Series.

Open this exercise →

How to practise

  1. Choose a Coding Decoding question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Reasoning topics

AnalogyBlood RelationsAnalogiesNumber SeriesNumber Series, Coding and Decoding and Odd Man OutData InterpretationCalendarInequalities