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MTS Reasoning – Coding-Decoding & Operations (Topic Test)
Read the following instructions carefully
- The test contains 20 questions.
- Each question has 4 options, of which only one is correct.
- You have to finish the test in 16 minutes.
- You are awarded 1 mark for each correct answer, and 0.25 marks are deducted for each wrong answer.
- There is no negative marking for questions you do not attempt.
- You may pause the test at any time and resume where you left off.
- Your marks, the correct answers and an explanation for every question are shown as soon as you submit.
- You can take this test as many times as you like. A fresh set is drawn each time you reload the page.
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Review this set's questions and answers (opens after you submit the test)
This free practice set from AndamanJobs has 20 questions to be solved in 16 minutes. Every question is listed below with four options. Open Show answer and explanation under a question to see the correct option and why it is correct. Try the timed test above first, then use this list to revise the questions you got wrong.
- If MOHAN is represented by the code KMFYL, then COUNT will be represented by:
- A. AMSLR
- B. MASRL
- C. SAMLR
- D. MSLAR
Show answer and explanation
Answer: A. AMSLR
Each letter is shifted 2 places back (M-K, O-M, H-F, A-Y, N-L), so COUNT becomes AMSLR.
- If LOCK is coded as MPDL, how will DOOR be coded?
- A. EPPS
- B. EPPQ
- C. EPQS
- D. CMMS
Show answer and explanation
Answer: A. EPPS
Each letter moves one place forward: L-M, O-P, C-D, K-L. So D-E, O-P, O-P, R-S gives EPPS.
- If '+' means '–','–' means '÷', '÷' means 'x' and 'x' means '+', what is value of:
125–5 x 10 ÷ 13 + 28- A. 115
- B. 127
- C. 130
- D. 140
Show answer and explanation
Answer: B. 127
Substituting the symbols gives 125 ÷ 5 + 10 × 13 - 28 = 25 + 130 - 28 = 127.
- If in a certain code LAMP is written as MBNQ, how is BOAT written?
- A. CPBU
- B. CPBT
- C. CQBU
- D. BPCU
Show answer and explanation
Answer: A. CPBU
Each letter moves forward one place: B→C, O→P, A→B, T→U.
- A word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in two matrices given below. The columns and rows of Matrix I are numbered from 0 to 4 and that of Matrix II are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, e.g., 'E' can be represented by 20,44 etc., and 'P' can be represented by 59,98 etc. Similarly, you have to identify the set for the word LAMB.
- A. 69, 87, 42, 55
- B. 76, 42, 78, 00
- C. 69, 24, 78, 05
- D. 99, 22, 68, 23
Show answer and explanation
Answer: B. 76, 42, 78, 00
L = 76 (row 7, col 6 of Matrix II), A = 42 (row 4, col 2 of Matrix I), M = 78 (row 7, col 8), B = 00 (row 0, col 0). So 76, 42, 78, 00.
- In a certain code language, 'ROAST' is written as 'PQYUR'. How will 'SLATE' be written in that code language?
- A. QZCRG
- B. QJCVG
- C. QJYRC
- D. QNYVC
Show answer and explanation
Answer: D. QNYVC
Letters alternate: first letter two back, second two forward, and so on (R-2=P, O+2=Q, A-2=Y, S+2=U, T-2=R). So SLATE becomes Q, N, Y, V, C.
- If + means x and x means +, what is 6 + 3 x 2?
- A. 24
- B. 20
- C. 18
- D. 12
Show answer and explanation
Answer: B. 20
Swapping the symbols gives 6 x 3 + 2 = 18 + 2 = 20.
- If 'P' denotes '÷', 'Q' denotes '×', 'R' denotes '+' and 'S' denotes '-' then: 12Q15P3R4S6 = ?
- A. 70
- B. 58
- C. 57
- D. 68
Show answer and explanation
Answer: B. 58
12 × 15 ÷ 3 + 4 - 6 = 180 ÷ 3 + 4 - 6 = 60 + 4 - 6 = 58.
- If in a certain language MONDAY is written as NPOEBZ, what is the code for SUNDAY?
- A. TWOEBZ
- B. TVOEBZ
- C. TVOFBZ
- D. TVPEBZ
Show answer and explanation
Answer: B. TVOEBZ
Each letter moves forward one place.
- If FRIEND is coded as GSJFOE, how is CANDLE coded?
- A. EBOEMF
- B. DBPEMF
- C. DBOEMF
- D. DBOFMF
Show answer and explanation
Answer: C. DBOEMF
Each letter moves forward one place: C-D, A-B, N-O, D-E, L-M, E-F.
- In a code, TEACHER is written as VGCEJGT. How is STUDENT written?
- A. UVXFGPV
- B. UVWFGVP
- C. UVWFGPV
- D. UWVFGPV
Show answer and explanation
Answer: C. UVWFGPV
Each letter moves forward two places.
- If BOOK is coded as 2-15-15-11, how is DESK coded in the same way?
- A. 4-5-19-11
- B. 4-5-18-11
- C. 3-5-19-11
- D. 4-6-19-11
Show answer and explanation
Answer: A. 4-5-19-11
Each letter is replaced by its position in the alphabet: D=4, E=5, S=19, K=11.
- If 5 × 4 = 15, 7 × 3 = 14, and 9 × 6 = 45, then 8 × 5 = ?
- A. 32
- B. 35
- C. 40
- D. 30
Show answer and explanation
Answer: A. 32
The rule is the product minus the first number: 20 − 5 = 15, 21 − 7 = 14, 54 − 9 = 45. So 40 − 8 = 32.
- If A + B means A is the father of B, A − B means A is the sister of B, and A × B means A is the wife of B, then what does P × Q + R mean?
- A. P is the mother of R
- B. P is the sister of R
- C. P is the daughter of R
- D. R is the father of P
Show answer and explanation
Answer: A. P is the mother of R
P is the wife of Q and Q is the father of R, so P is the mother of R.
- If in a certain code GARDEN is written as 7-1-18-4-5-14, how is MIND written?
- A. 12-9-14-4
- B. 13-9-14-4
- C. 13-8-14-4
- D. 13-9-13-4
Show answer and explanation
Answer: B. 13-9-14-4
Each letter is replaced by its position: M=13, I=9, N=14, D=4.
- Some equations are solved on the basis of certain system. Find out the correct answer for the unsolved equation on that basis. 5 x 4 x 2 = 452; 7 x 8 x 6 = 876; 5 x 7 x 9 = ?
- A. 450
- B. 680
- C. 220
- D. 759
Show answer and explanation
Answer: D. 759
The first two numbers swap places and the third stays: 5,4,2 becomes 4,5,2 and 7,8,6 becomes 8,7,6. So 5,7,9 becomes 7,5,9 = 759.
- If SEA is coded as 1951, how is BAY coded using the same alphabet-position method?
- A. 1225
- B. 2152
- C. 2215
- D. 2125
Show answer and explanation
Answer: D. 2125
Each letter is replaced by its position: S=19, E=5, A=1 gives 1951. So B=2, A=1, Y=25 gives 2125.
- If '+' means 'divided by', '-' means 'multiplied by', 'x' means 'minus' and '/' means 'plus', then:
10 / 4 - 5 x 12 + 2 = ?- A. 18
- B. 22
- C. 20
- D. 24
Show answer and explanation
Answer: D. 24
Putting the real signs in: 10 + 4 × 5 − 12 ÷ 2 = 10 + 20 − 6 = 24.
- In a code, MOBILE is written as NPCJMF. How is TABLET written in the same code?
- A. UBCMFU
- B. UACMFU
- C. VBCMFU
- D. UBCMFV
Show answer and explanation
Answer: A. UBCMFU
Each letter moves forward one place: T→U, A→B, B→C, L→M, E→F, T→U.
- In a certain code, if RED is written as 27 by adding the positions of its letters, what number represents BLUE?
- A. 38
- B. 39
- C. 40
- D. 41
Show answer and explanation
Answer: C. 40
R+E+D = 18+5+4 = 27, so B+L+U+E = 2+12+21+5 = 40.