Number Series, Coding and DecodingMCQMTP Dec 2023 Series IQuestion 2141 of 217
All Questions

TWENTY is written as 863985 and ELEVEN is written as 323039, then TWELVE can be coded.

Options

A863203
B862303
C826303
D862303
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Correct Answer

✅ Option a — 863203

All Options:

  • A863203
  • B862303
  • C826303
  • D862303

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Detailed Solution & Explanation

We can find the code for each letter using direct substitution from the given examples:
From the word TWENTY→863985\displaystyle TWENTY \rightarrow 863985, we have:
T=8\displaystyle T = 8, W=6\displaystyle W = 6, E=3\displaystyle E = 3, N=9\displaystyle N = 9, Y=5\displaystyle Y = 5

From the word ELEVEN→323039\displaystyle ELEVEN \rightarrow 323039, we have:
E=3\displaystyle E = 3, L=2\displaystyle L = 2, V=0\displaystyle V = 0, N=9\displaystyle N = 9

Now, let's find the code for the word TWELVE\displaystyle TWELVE by substituting the letters:
T→8\displaystyle T \rightarrow 8
W→6\displaystyle W \rightarrow 6
E→3\displaystyle E \rightarrow 3
L→2\displaystyle L \rightarrow 2
V→0\displaystyle V \rightarrow 0
E→3\displaystyle E \rightarrow 3

Combining these digits in order, we get the code 863203\displaystyle 863203.

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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