A group of numbers/symbols is coded using letter codes as per the codes given below and the conditions that follow. If none of the conditions apply, then codes for the respective number/symbol to be followed directly as given in the table. Conditions: (i) If the first element is a symbol and the last a number, the codes for these two (the first and the last elements) are to be interchanged. What will be the code for the following group? 7 2 @ 1 3 &Number/Symbol 8 9 @ & 3 7 2 % 1 3 Δ 4 6 Code L C Z M D W A P R T F B K
(ii) If the first element is an odd number and the last an even number, the first and last elements are to be coded as ©.
(iii) If both the second and third elements are perfect squares, the third element is to be coded as the code for the second element.
Step 1: Identify the Question Type
This is a coding-decoding question involving a set of rules applied to a sequence of numbers and symbols.
Step 2: Understand the Code Table and Conditions
The code table maps numbers and symbols to letters:
| Number/Symbol | 8 | 9 | @ | & | 3 | 7 | 2 | % | 1 | 3 | Δ | 4 | 6 |
| Code | L | C | Z | M | D | W | A | P | R | T | F | B | K |
The conditions are:
- If the first element is a symbol and the last a number, interchange their codes.
- If the first element is an odd number and the last an even number, code both as ©.
- If the second and third elements are perfect squares, code the third element as the code for the second element.
Step 3: Apply the Rules to the Given Group: 7 2 @ 1 3 &
- Check Condition (i): The first element (7) is a number, and the last element (&) is a symbol. This condition is not met.
- Check Condition (ii): The first element (7) is an odd number, and the last element (&) is not a number. This condition is not met.
- Check Condition (iii): The second element (2) is not a perfect square, and the third element (@) is a symbol, not a number. This condition is not met.
Since none of the conditions are met, we directly use the code table to code each element.
Step 4: Decode the Group Using the Code Table
- 7: W
- 2: A
- @: Z
- 1: R
- 3: T
- &: M
Therefore, the code for 7 2 @ 1 3 & is WAZRTM.
Step 5: Eliminate Incorrect Options
Options 2, 3, and 4 do not follow the direct coding from the table and don't consider the conditions properly.
Step 6: Conclusion
The correct code for the group 7 2 @ 1 3 & is WAZRTM.
Important Questions from Coding decoding
In a certain code language, ‘watch is disturb’ is written as ‘xr pa qn’ and ‘don’t watch him’ is written as ‘tu bg pa’. How is ‘watch’ written in the given language?
In a certain code language, ‘call on him’ is coded as ‘ol ni vc’ and ‘awaiting your call’ is coded as ‘ni dx sb’. How is ‘call’ coded in that language?
In a certain code language, 'talk to me' is coded as 'aq yt bl' and 'do not talk' is coded as 'yt me wc'. What is the code for 'talk' in that language?
In a certain code language, 'can we play' is coded as 'ae tc nx' and 'play in school' is coded as 'tc rm ef'. How is 'play' coded in that language?
In a certain code language, 'BOOK' is written as 'ZNNI' and 'SHOP' is written as 'QFNN'. How will 'NOTES' be written in that language?
