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MAT Exam 2020 Paper

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Question : 75 of 200

Marks: +1, -0

In a certain code, a number 13479 is written as AQFJL and 2568 is written as DMPN. How is 396824 written in that code?

QLPNMJ
QLPNMF
QLPMNF
QLPNDF

Solution:

Concept:

Each digit is replaced by a fixed letter in this code.

So we can find the letter for every digit from the two given examples.

Explanation:

From

\text{13479} \to \text{AQFJL}

, we get the digit-letter pairs:

1 \to \text{A}

,

3 \to \text{Q}

,

4 \to \text{F}

,

7 \to \text{J}

,

9 \to \text{L}

.

From

\text{2568} \to \text{DMPN}

, we get:

2 \to \text{D}

,

5 \to \text{M}

,

6 \to \text{P}

,

8 \to \text{N}

.

Now code the number

\text{396824}

digit by digit.

3 \to \text{Q}

9 \to \text{L}

6 \to \text{P}

8 \to \text{N}

2 \to \text{D}

4 \to \text{F}

Therefore,

\text{396824}

is written as

\text{QLPNDF}

.

Answer:

\text{QLPNDF}

, which is option D.

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