In Number Series reasoning, Series is a continuous order of numbers, letters arranged in such a way that each part in the series gets according to some definite rules. These rules can be based on mathematical calculations, place of letters in alphabetically so on.In the logical reasoning section on number series questions, the examiner will provide a specified sequence or order of letters, numbers, or a combination of both. One of the terms, such as a letter/number/letter or a number of the series, will be missing either at the end of the series or in between the series. Candidates need to identify the pattern involved in the formation of the series and find the missing term accordingly to complete the series.

Different esteemed government exams ask questions related to Series, logical reasoning. Sollogism requires a strong vocabulary and general intelligence.

Freeonlinetest is the best platform for competitive exams like UPSC, SSC, Banking, Railways and other State PSCs. Here we provide the best MCQs, Online tests, Mock Tests of Series from easy to top level Question Papers which helps candidates to practice more questions on Series.

**Question-1)**

**5, 10, 17, 26, 37, ?, 55 (Addition Series)**

**Solution:**

5 + 5 = 10

10 + 7 = 17

17 + 9 = 26

26 + 11 = 37

37 +13 = 40

40 + 15 = 55

Hence, the correct answer is** 40.**

**Question-2)**

**15625, 3125, 635, ?, 25, 5 ( Division series)**

**Solution:**

$15625 / 5$ = 3125

$3125 / 5 $= 625

$625 / 5 $= 125

$125 / 5$ = 25

$25 / 5$ = 5

Hence, the correct answer is** 125.**

**Question-3)**

**5, 11, 24, 65, ?, 313 ( Mixed series)**

**Solution:**

5 × 2 +1 = 11

11 × 2 + 2= 24

24 × 2 + 3 = 75

75 × 2 + 4 = 154

154 × 2 + 5 = 313

Hence, the correct answer is** 154.**

**Question-4)**

**36, 64, 100, ?, 196 ( Square series)**

**Solution:**

$6^2$ = 36

$8^2$ = 64

$10^2$ = 100

$12^2$ = 144

$14^2$ = 196

Hence, the correct answer is **144**.

**Question-5)**

**11, 14, 25, 49, ?, 123, 197 (Compound series)**

**Solution:**

25 = 11 + 14

49 = 14 + 25

74 = 25 + 49

123 = 49 + 74

197 = 74 + 123

Hence, the correct answer is **74**.

Online Test - 1 (Series Completion) TAKE TEST
Number of questions : 20 | Time : 30 minutes |

Online Test - 2 (Series Completion) TAKE TEST
Number of questions : 20 | Time : 30 minutes |

Online Test - 3 (Series Completion) TAKE TEST
Number of questions : 20 | Time : 30 minutes |