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Question

In a certain code language, 'RA + FE' is coded as ‘246', and 'AB + JC' is coded as ‘115'. How will 'AC + BD' be coded in that language?

The correct answer is

37

Solving the Code Language Puzzle

This question asks us to decipher a specific code language where combinations of letters are assigned numerical values. We are given two examples of this coding pattern and need to apply the same logic to a new letter combination.

Analyzing the Given Code Language Examples

Let's carefully examine the examples provided to find the underlying rule:

  • Example 1: 'RA + FE' is coded as '246'.
  • Example 2: 'AB + JC' is coded as '115'.

We need to figure out how the letters 'RA', 'FE', 'AB', and 'JC' are converted into numbers and how the '+' symbol is used.

Finding the Pattern in Letter Coding

A common pattern in letter coding puzzles involves the alphabetical position of letters. Let's list the positions of the letters used in the examples:

  • R: 18th letter
  • A: 1st letter
  • F: 6th letter
  • E: 5th letter
  • B: 2nd letter
  • J: 10th letter
  • C: 3rd letter

Consider the first example: 'RA + FE' → '246'.

If we look at the positions of R (18) and A (1), and F (6) and E (5), how can we get 246?

Let's try combining the positions. What if the two letters before '+' form a number, and the two letters after '+' form another number, and these two numbers are added?

  • For 'RA', positions are 18 and 1. If we concatenate these, we get 181.
  • For 'FE', positions are 6 and 5. If we concatenate these, we get 65.

Let's add these concatenated numbers: $181 + 65 = 246$. This matches the first example!

Let's test this pattern with the second example: 'AB + JC' → '115'.

  • For 'AB', positions are 1 and 2. If we concatenate these, we get 12.
  • For 'JC', positions are 10 and 3. If we concatenate these, we get 103.

Let's add these concatenated numbers: $12 + 103 = 115$. This matches the second example as well!

The pattern is consistent. The rule is to take the alphabetical positions of the two letters in each pair, concatenate them to form a number, and then add the two resulting numbers.

Code Language Pattern Derivation
Letter Pair Letter Positions Concatenated Number Calculation Coded Value
RA R=18, A=1 181 $181 + 65 = 246$ 246
FE F=6, E=5 65
AB A=1, B=2 12 $12 + 103 = 115$ 115
JC J=10, C=3 103

Applying the Pattern to 'AC + BD'

Now we apply the same rule to the expression 'AC + BD'.

First, find the alphabetical positions of the letters in 'AC':

  • A: 1st letter
  • C: 3rd letter

Concatenate their positions to form a number: 13.

Next, find the alphabetical positions of the letters in 'BD':

  • B: 2nd letter
  • D: 4th letter

Concatenate their positions to form a number: 24.

Finally, add the two numbers obtained:

Value of 'AC' + Value of 'BD' $= 13 + 24$.

Calculating the Final Coded Value

Performing the addition:

$13 + 24 = 37$

Therefore, 'AC + BD' will be coded as '37' in this language.

Revision Table: Key Steps in Decoding

Steps to Solve Code Language Problem
Step Description 'AC + BD' Application
1 Understand the problem and given examples. Analyze 'RA+FE=246' and 'AB+JC=115'.
2 Identify the pattern by analyzing letter-to-number mapping. Discover the concatenation of alphabetical positions.
3 Apply the identified pattern to the new expression. Decode 'AC' and 'BD' using alphabetical positions.
4 Perform the required mathematical operation (addition in this case). Add the values for 'AC' and 'BD'.
5 State the final coded value. The result is 37.

Additional Information: Types of Letter Coding

Letter coding puzzles often involve various patterns. Some common types include:

  • Alphabetical Position: Using the A=1, B=2, ... Z=26 system directly.
  • Reverse Alphabetical Position: Using Z=1, Y=2, ... A=26 system.
  • Skipping Letters: Coding based on letters placed at a fixed distance in the alphabet.
  • Jumbling or Rearrangement: The letters within a word are rearranged according to a rule.
  • Symbol Coding: Replacing letters with symbols.
  • Mixed Coding: A combination of numbers, symbols, or other letters.

Solving these puzzles requires careful observation, logical reasoning, and testing different possible patterns based on the given examples.

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Important Questions from Operations on Place Value

  1. In a certain code language, ‘ALPINE’ is coded as ‘171’ and ‘SPRING’ is coded as ‘83’. How will ‘CAPITAL’ be coded in that language?

  2. In a certain code language, ‘SERVANT’ is coded as ‘192182211420’. How will ‘MAGNIFY’ be coded as in that language?

  3. If CAB is coded as 6 and BED is coded as 40, then how will HAD be coded as?

  4. In a certain code language, 'FUEL’ is coded as '50' and 'JEER' is coded as '44'. How will 'FARE' be coded in that language?

  5. In a certain code language, ‘MOST’ is written as ‘134’ and ‘FUR’ is written as ‘90’. How will ‘SUCCESS’ be written in that language?

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