Find odd one 41, 43, 47, 53, 61, 71, 83, 95 .

Option a: 95. Solution: Let's analyze the numbers in the series: - The numbers 41, 43, 47, 53, 61, 71, 83 are all prime numbers. - 95 is a composite number ( 95 = 5 × 19 ). Alternatively, let's examine the differences between consecutive terms: - 43 - 41 = 2 - 47 - 43 = 4 - 53 - 47 = 6 - 61 - 53 = 8 - 71 - 61 = 10 - 83 - 71 = 12 Following this sequence of consecutive even differences ( +2, +4, +6, +8, +10, +12, +14 ), the next term should be: 83 + 14 = 97 The term 95 violates both the prime number pattern and the difference progression pattern. Therefore, 95 is the odd man out. Hence, Option A is the correct answer.

Find odd one $41, 43, 47, 53, 61, 71, 83, 95$.

The correct answer is Option a: 95. Let's analyze the numbers in the series: - The numbers $41, 43, 47, 53, 61, 71, 83$ are all **prime numbers**. - $95$ is a **composite number** ($95 = 5 \times 19$). Alternatively, let's examine the differences between consecutive terms: - $43 - 41 = 2$ - $47 - 43 = 4$ - $53 - 47 = 6$ - $61 - 53 = 8$ - $71 - 61 = 10$ - $83 - 71 = 12$ Following this sequence of consecutive even differences ($+2, +4, +6, +8, +10, +12, +14$), the next term should be: $$83 + 14 = 97$$ The term $95$ violates both the prime number pattern and the difference progression pattern. Therefore, $95$ is the odd man out. Hence, **Option A** is the correct answer.

Number Series, Coding and DecodingMCQPYQ Jun 23Question 2170 of 217

All Questions

Find odd one $\displaystyle 41, 43, 47, 53, 61, 71, 83, 95$ .

Options

A95

B83

C71

D53

For any discrepancies in this question, email contact@cadada.in

Correct Answer

✅ Option a — 95

All Options:

Detailed Solution & Explanation

Let's analyze the numbers in the series:
- The numbers

\displaystyle 41, 43, 47, 53, 61, 71, 83

are all **prime numbers**.
-

\displaystyle 95

is a **composite number** (

\displaystyle 95 = 5 \times 19

).

Alternatively, let's examine the differences between consecutive terms:
-

\displaystyle 43 - 41 = 2

\displaystyle 47 - 43 = 4

\displaystyle 53 - 47 = 6

\displaystyle 61 - 53 = 8

\displaystyle 71 - 61 = 10

\displaystyle 83 - 71 = 12

Following this sequence of consecutive even differences (

\displaystyle +2, +4, +6, +8, +10, +12, +14

), the next term should be:

83 + 14 = 97

The term

\displaystyle 95

violates both the prime number pattern and the difference progression pattern. Therefore,

\displaystyle 95

is the odd man out.

Hence, **Option A** is the correct answer.

About This Chapter: Number Series, Coding and Decoding

Paper

Paper 3: Quantitative Aptitude

Weightage

5 Marks

Key Topics

Number series, Coding & Decoding, Odd man out

This chapter covers Number series, Coding & Decoding, Odd man out and is part of Paper 3: Quantitative Aptitude in the CA Foundation exam.

View Official ICAI Syllabus

Exam Strategy Tip

This topic carries 5 Marks weightage. Focus on understanding core concepts rather than memorizing.

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Find odd one 41,43,47,53,61,71,83,95\displaystyle 41, 43, 47, 53, 61, 71, 83, 9541,43,47,53,61,71,83,95.