Learn and practice Problems on Coding Decoding with easy explaination and shortcut tricks. All questions and answers on Coding Decoding covered for various Competitive Exams.
This type of reasoning problems tests your ability to decipher the rule that codes a word or message and to code the given word or message following the same rule.
Solve Problems:
1) If in a certain language, NOIDA is coded as OPJEB, how is DELHI coded in that language?
Each letter in the word NOIDA is moved one step forward to form the code OPJEB. So, in DELHI, D will be coded as E, E as F, L as M, H as I, I as J. Thus, the code becomes EFMIJ.
Each letter in the word HOT is moved one step backward to form the code GNS. So, following the same rule, C will be coded as B, O as N, L as K, and D as C. Thus, the code becomes BNKC.
Solve:
3) In a certain code, TREE is written as UQFD. How is LEAF written in that code?
The letters in the word TREE are moved alternately one step forward and one step backward to form the code UQFD. So, following the same rule, L will be coded as M, E will be coded as D, A will be coded as B, and F will be coded as E. Thus, the code for LEAF is MDBE.
4) In a certain code, PAPER is written as QPARE. How is TABLE written in that code?
The first letter of the word PAPER is moved one step forward and the next two letters have exchanged their positions and so on. So, following the same coding, T will be coded as U, A will be coded as B, B will be coded as A, L will be coded as E and E will be coded as L. Thus, TABLE is written as UBAEL in that code.
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5) In a certain code, ARMY is written as ASOB. How is JUDGE written in that code?
The first letter in the word ARMY remains same and the second, third and fourth letters are moved one, two and three steps forward respectively. Following the same coding, J will be coded as J, U as V, D as F, G as J and E as I. So, the JUDGE is written as JVFJI in that code.
6) In a certain code, ‘REACTION’ is written as ‘RAETCOIN’. How is ‘BEAUTY’ written in that code?
The first and last letter of the given word remains the same. The letters between these letters interchange their positions in a pair of two. So, following the same rule, B and Y will remain the same, and the EA becomes AE; UT becomes TU. So, the BEAUTY will be written as BAETUY in this code.
7) In a certain code ‘LION’ is written as LMGJ. How is ‘MILK’ written in that code?
The order of the words is reversed, and then each letter is moved two steps backward. The reverse of MILK is KLIM. On moving letters two steps backward, K becomes I; L becomes J; I becomes G and M becomes K.
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8) In a certain code ‘WRITER’ is written as ‘SFUJSX’. How is ‘DOCTOR’ written in that code?
The order of the words is reversed and then each letter is moved one step forward. The reverse of the DOCTOR is ROTCOD. On moving letters one step forward R becomes S; O becomes P; T becomes U; C becomes D; O becomes P, and D becomes E. So, the DOCTOR will be written as SPUDPE in that code.
9) In a certain code ‘BILLION’ is written as IBLLOIN. How is MILTON written in that code?
The letters are interchanged in each pair of the word. So, MI becomes IM; LT becomes TL and ON becomes NO. So, MILTON is written as IMTLNO in that code.
10) If every alternate letter from B onwards is written in small letters, whereas the other letters are written in capitals, how will the 3rd month from May be coded?
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