In odd one out we need to identify the odd one among the four options.

Math odd one out is one of the important topics in competitive exams for different types of employment test in which math logical question are being asked. Students can improve their aptitude skill by practicing the questions and answers on odd one out.

If the students are clear with the concepts and ideas of this topic; they can easily solve any type of problems in this topic. Let’s consider some of the examples on odd one out, hints are given for the students to get the idea to solve.

**1.** 51, 64, 78, 91, 104, 117.

(a) 51

(b) 78

(c) 104

(d) 130

[Hints: Add 13 to each number].

**2.** 147, 125, 103, 81, 58, 36, 14.

(a) 147

(b) 103

(c) 58

(d) 14

[Hints: Subtract 22 from each number].

**3.** 5, 15, 45, 137, 411, 1233.

(a) 137

(b) 1233

(c) 5

(d) None of these.

[Hints: Multiply 3 to each number].

**4.** 17, 21, 26, 30, 34, 38, 42.

(a) 21

(b) 26

(c) 30

(d) None of these.

[Hints: Add 4 to each number].

**5.** 22, 33, 47, 55, 66, 77, 88.

(a) 22

(b) 47

(c) 66

(d) 88

[Hints: Multiple of 11].

**6.** Which is the odd one out?

(a) 10 + 9

(b) 19 - 0

(c) 95 ÷ 5

(d) 19 × 0

**7.** Which is the odd one out?

(a) 55 - 44

(b) 121 ÷ 11

(c) 11 + 1

(d) 11 × 1

**8.** 8, 27, 64, 120, 216, 343.

(a) 27

(b) 120

(c) 343

(d) None of these.

**9.** 14, 28, 40, 54, 68, 82, 96.

(a) 14

(b) 40

(c) 68

(d) 96

**10.** Which is the odd one out?

(a) 1 + 5

(b) 18 - 12

(c) 3 × 2

(d) 6 ÷ 3

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