Start learning →

Coast Guard Navik Number Series — practice questions

Explore 2 free Number Series questions in Coast Guard Navik Quantitative Aptitude. Open each question or exercise to read its content, reference answers and available explanation.

Practise Number Series with Quill →

Number Series questions and exercises with answers

Showing questions 1–2 of 2.

Find the missing term: 12, 20, 34, 57, ?Read the answer and worked solution →Complete the number series: 32, 64, 256, 1536, ?, 122880, 1474560Read the answer and worked solution →

Worked practice questions

Find the missing term: 12, 20, 34, 57, ?

  1. 93
  2. 93.5
  3. 94
  4. 93.25
Show answer and solution

Correct answer: B. 93.5

1. The rule is ×1.5 then add 2, 4, 6, 8 successively. 2. 12×1.5 + 2 = 20; 20×1.5 + 4 = 34; 34×1.5 + 6 = 57. 3. Next: 57 × 1.5 + 8 = **93.5**. _Source: IBPS RRB Officer Scale I Prelims PYQ (Examrace), Q.74_

Open this question →

Complete the number series: 32, 64, 256, 1536, ?, 122880, 1474560

  1. 12286
  2. 12288
  3. 12270
  4. 12285
Show answer and solution

Correct answer: B. 12288

1. Each term multiplies by an increasing even number: ×2, ×4, ×6, ×8, ... 2. So the missing term = 1536 × 8 = 12288. 3. Check: 12288 × 10 = 122880 and 122880 × 12 = 1474560. _Source: RRB Group D CEN-02/2018 PYQ, Q.24._

Open this question →

How to practise

  1. Choose a Number Series 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 Quantitative Aptitude topics

MensurationMultiplicationNumber PropertiesSimple InterestSquares And RootsPercentagesNumber SystemRatio and Proportion