In a certain code, 'CAT' is coded as '312' and 'DOG' is coded as '415'. What is the code for 'AD' in

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Complete Analogous Pair Simple Analogy Choose Analogous Pair Double Analogy Choose A Similar Word Detect Analogies Three Word Analogy Number Analogy Alphabet Analogy
Classification

Choose Odd Word Choose odd Pair of Words Choose odd Numbers Choose odd Number Pair / Group Choose Odd Letter Group
Series Completion

Number Series Alphabet Series Letter Series
Coding - Decoding

Letter Coding Number Coding Number To Letter Coding Substitution Mixed Letter Coding Mixed Number Coding
Blood Relations

Deciphering Jumbled Up Descriptions Relation Puzzle Coded Relations
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Classification Type Questions Seating / Placing Arrangements Comparison Type Questions Sequential Order Of Things Selection Based On Given Conditions Family-Based Problems Jumbled Problems Clock Puzzels
Sequential Output Tracing

Type 1
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Alphabetical Order Of Words Letter-Word Problems Rule-Detection Alphabetical Quibble Word Formation
Number-Ranking-Time Sequence

Number Sequence Ranking Sequence DateTime Sequence
Mathematical Operations

Problem-Solving By Substitution Interchange Of Signs And Numbers
Inserting the Missig Character

Type 1
Decision Making
Assertion and Reason

Type 1
Situation Reaction Test

Type 1
Verification of Truth of the Statement

Type 1

In a certain code, 'CAT' is coded as '312' and 'DOG' is coded as '415'. What is the code for 'AD' in the same language?