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Coding–Decoding - Letter, Number, Substitution, Mixed Coding, Decoding Messages - MCQ Questions with Answers for Competitive Exams 2025

Practice important Coding–Decoding questions for competitive exams like UPSC, SSC CGL, SSC CHSL, Banking (IBPS PO, IBPS Clerk, SBI), Railway (RRB NTPC, Group D), and State PSC. Each question includes detailed explanations in Hindi & English to help you understand the concepts thoroughly. Click "View Answer" to see the correct option and explanation.

1. If ‘COMPUTER’ coded as ‘121’, then ‘LAPTOP’ = ? / यदि ‘COMPUTER’=‘121’, तो ‘LAPTOP’=?

2. यदि ‘FLOWER’ = ‘72’, ‘GARDEN’ = ‘81’, तो ‘TREE’ = ? / If ‘FLOWER’=‘72’, ‘GARDEN’=‘81’, find ‘TREE’.

3. ‘BOOK’=‘120’, ‘COPY’=‘136’, Find ‘NOTE’. / ‘BOOK’=‘120’, ‘COPY’=‘136’, तो ‘NOTE’ ज्ञात करें।

4. If ‘RICE’=‘12’, ‘WHEAT’=‘15’, find ‘CORN’. / यदि ‘RICE’=‘12’, ‘WHEAT’=‘15’, तो ‘CORN’=?

5. ‘LOCK’=‘37’, ‘KEY’=‘43’, find ‘SAFE’. / ‘LOCK’=‘37’, ‘KEY’=‘43’, तो ‘SAFE’=?

6. यदि ‘CUP’=‘45’, ‘PLATE’=‘85’, तो ‘SPOON’=? / If ‘CUP’=‘45’, ‘PLATE’=‘85’, then ‘SPOON’=?

7. ‘NIGHT’=‘63’, ‘DAY’=‘33’, Find ‘MORNING’. / ‘NIGHT’=‘63’, ‘DAY’=‘33’, तो ‘MORNING’ क्या होगा?

8. ‘LEFT’=‘76’, ‘RIGHT’=‘89’, Find ‘CENTER’. / ‘LEFT’=‘76’, ‘RIGHT’=‘89’, तो ‘CENTER’=?

9. If ‘STONE’=‘53’, ‘SAND’=‘44’, find ‘ROCK’. / यदि ‘STONE’=‘53’, ‘SAND’=‘44’, तो ‘ROCK’=?

10. ‘CROW’=‘62’, ‘SPARROW’=‘74’, find ‘EAGLE’. / ‘CROW’=‘62’, ‘SPARROW’=‘74’, तो ‘EAGLE’=?

11. ‘RAIN’=‘47’, ‘CLOUD’=‘58’, find ‘THUNDER’. / ‘RAIN’=‘47’, ‘CLOUD’=‘58’, तो ‘THUNDER’=?

12. यदि ‘CAT’ को ‘3120’ के रूप में कोड किया गया है और ‘DOG’ को ‘4157’ के रूप में, तो ‘BAT’ को किस प्रकार कोड किया जाएगा? / If ‘CAT’ is coded as ‘3120’ and ‘DOG’ as ‘4157’, then how will ‘BAT’ be coded?

13. यदि ‘APPLE’ को ‘BQQMF’ के रूप में लिखा गया है, तो ‘BALL’ का कोड क्या होगा? / If ‘APPLE’ is written as ‘BQQMF’, what will be the code for ‘BALL’?

14. यदि ‘MANGO’ को ‘NBOHP’ लिखा गया है, तो ‘GRAPE’ का कोड क्या होगा? / If ‘MANGO’ is coded as ‘NBOHP’, what will be the code for ‘GRAPE’?

15. यदि ‘RAT’ को ‘81’ और ‘BAT’ को ‘64’ लिखा गया है, तो ‘CAT’ का कोड क्या होगा? / If ‘RAT’ is coded as ‘81’ and ‘BAT’ as ‘64’, what is the code for ‘CAT’?

16. यदि ‘TREE’ = ‘64’, ‘LEAF’ = ‘36’, तो ‘ROOT’ = ? / If ‘TREE’ = ‘64’ and ‘LEAF’ = ‘36’, then ‘ROOT’ = ?

17. यदि ‘HOUSE’ = ‘IPVTF’, तो ‘ROOM’ = ? / If ‘HOUSE’ = ‘IPVTF’, then what is the code for ‘ROOM’?

18. यदि ‘FISH’ को ‘GJTI’ लिखा गया है, तो ‘GOAT’ का कोड क्या होगा? / If ‘FISH’ is written as ‘GJTI’, what will be the code for ‘GOAT’?

19. यदि ‘123’ = ‘ABC’ और ‘456’ = ‘DEF’, तो ‘789’ = ? / If ‘123’ = ‘ABC’ and ‘456’ = ‘DEF’, then ‘789’ = ?

20. यदि ‘DELHI’ को ‘EDILH’ लिखा गया है, तो ‘AGRA’ का कोड क्या होगा? / If ‘DELHI’ is written as ‘EDILH’, what will be the code for ‘AGRA’?

21. यदि ‘TABLE’ = ‘65’, ‘CHAIR’ = ‘54’, तो ‘DESK’ = ? / If ‘TABLE’ = ‘65’, ‘CHAIR’ = ‘54’, then ‘DESK’ = ?

22. यदि ‘PEN’ = ‘48’ और ‘INK’ = ‘33’, तो ‘BOOK’ = ? / If ‘PEN’ = ‘48’ and ‘INK’ = ‘33’, then what is ‘BOOK’?

23. यदि ‘LION’ = ‘MJPQ’, तो ‘TIGER’ का कोड क्या होगा? / If ‘LION’ = ‘MJPQ’, what is the code for ‘TIGER’?

24. यदि ‘MILK’ = ‘NKML’, तो ‘WATER’ = ? / If ‘MILK’ = ‘NKML’, what will be the code for ‘WATER’?

25. यदि ‘BOY’ = ‘25’, ‘GIRL’ = ‘34’, तो ‘MAN’ = ? / If ‘BOY’ = ‘25’ and ‘GIRL’ = ‘34’, what is the code for ‘MAN’?

26. यदि ‘CUP’ को ‘DVO’ के रूप में लिखा गया है, तो ‘TEA’ का कोड क्या होगा? / If ‘CUP’ is written as ‘DVO’, what is the code for ‘TEA’?

27. यदि ‘EARTH’ = ‘FBSUI’, तो ‘WORLD’ = ? / If ‘EARTH’ = ‘FBSUI’, what is the code for ‘WORLD’?

28. यदि ‘BIRD’ = ‘CJSE’, तो ‘FISH’ का कोड क्या होगा? / If ‘BIRD’ = ‘CJSE’, what is the code for ‘FISH’?

29. यदि ‘COLD’ को ‘DPME’ लिखा गया है, तो ‘HOT’ का कोड क्या होगा? / If ‘COLD’ is coded as ‘DPME’, what is the code for ‘HOT’?

30. यदि ‘DOG’ = ‘EPI’, तो ‘CAT’ = ? / If ‘DOG’ = ‘EPI’, then what is ‘CAT’?

31. यदि ‘RAIN’ = ‘TCKP’, तो ‘SUN’ का कोड क्या होगा? / If ‘RAIN’ = ‘TCKP’, what will be the code for ‘SUN’?

32. यदि ‘KING’ = ‘LJPH’, तो ‘QUEEN’ = ? / If ‘KING’ = ‘LJPH’, then ‘QUEEN’ = ?

33. यदि ‘SMART’ = ‘TNBUS’, तो ‘SHARP’ का कोड क्या होगा? / If ‘SMART’ = ‘TNBUS’, what will be the code for ‘SHARP’?

34. यदि ‘LAMP’ = ‘MBNQ’, तो ‘FAN’ = ? / If ‘LAMP’ = ‘MBNQ’, then what is the code for ‘FAN’?

35. यदि ‘GOLD’ = ‘HPME’, तो ‘SILVER’ = ? / If ‘GOLD’ = ‘HPME’, what is the code for ‘SILVER’?

36. यदि ‘SUN’ = ‘TVP’, तो ‘MOON’ = ? / If ‘SUN’ = ‘TVP’, then what will be ‘MOON’?

37. यदि ‘WATER’ = ‘XBUFS’, तो ‘JUICE’ = ? / If ‘WATER’ = ‘XBUFS’, what is the code for ‘JUICE’?

38. यदि ‘BLACK’ = ‘CMBDL’, तो ‘WHITE’ = ? / If ‘BLACK’ = ‘CMBDL’, what is the code for ‘WHITE’?

39. यदि ‘CHAIR’ = ‘DIBJS’, तो ‘TABLE’ = ? / If ‘CHAIR’ = ‘DIBJS’, then ‘TABLE’ = ?

40. यदि ‘CUP’ = ‘DVO’, तो ‘MUG’ = ? / If ‘CUP’ = ‘DVO’, what will be the code for ‘MUG’?

41. यदि ‘KING’ = ‘LJPH’, तो ‘PRINCE’ = ? / If ‘KING’ = ‘LJPH’, then what is the code for ‘PRINCE’?

42. यदि ‘DOG’ को ‘EHP’ लिखा जाता है, तो ‘CAT’ को कैसे लिखा जाएगा? / If ‘DOG’ is written as ‘EHP’, how will ‘CAT’ be written?

43. यदि ‘FLOWER’ = ‘GMQXFS’, तो ‘GARDEN’ = ? / If ‘FLOWER’ = ‘GMQXFS’, then ‘GARDEN’ = ?

44. In a code, ‘WATER’ = ‘XBUSF’. What will ‘RIVER’ be? / किसी कोड में ‘WATER’ = ‘XBUSF’ है। तो ‘RIVER’ क्या होगा?

45. If ‘COAL’ = ‘DPBM’, how is ‘IRON’ written? / यदि ‘COAL’ = ‘DPBM’, तो ‘IRON’ को कैसे लिखा जाएगा?

46. यदि ‘ROAD’ = ‘SPBE’, तो ‘PATH’ = ? / If ‘ROAD’ = ‘SPBE’, then ‘PATH’ = ?

47. ‘LOVE’ = ‘MPWF’, then ‘HATE’ = ? / ‘LOVE’ = ‘MPWF’, तो ‘HATE’ = ?

48. If ‘MOTHER’ = ‘NPUIFS’, then ‘FATHER’ = ? / यदि ‘MOTHER’ = ‘NPUIFS’, तो ‘FATHER’ = ?

49. ‘RAIN’ को ‘SBJO’ लिखा गया है। तो ‘SNOW’ को कैसे लिखा जाएगा? / ‘RAIN’ is coded as ‘SBJO’. Then how is ‘SNOW’ coded?

50. यदि ‘SUN’ = ‘TVQ’, तो ‘MOON’ = ? / If ‘SUN’ = ‘TVQ’, then ‘MOON’ = ?

Important General Knowledge Questions | Coding–Decoding GK in Hindi