Coding and Decoding: Test 1

10 questions · 15 minutes · scoring and calculator rules shown before you begin

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Coding and Decoding Test 1: questions and answers

Take the test first if you want an honest score. The answers and solutions below are folded away until you open them.

  1. 1. In a certain code, MOTHER is written as NPUIFS. How is BRAIN written in that code?
    1. CSBOJ
    2. CSBJO
    3. AQZHM
    4. DTCKP

    Reference: q-d2574c56-83 · Report this question

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    Answer: B. CSBJO

    Each letter is moved 1 place forward in the alphabet, so BRAIN becomes CSBJO.
  2. 2. If SCHOOL is coded as LOOHCS, how is SILVER coded?
    1. RILVES
    2. RVELIS
    3. ERVLIS
    4. REVLIS

    Reference: q-e14b5636-51 · Report this question

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    Answer: D. REVLIS

    The letters of the word are written in reverse order, so SILVER becomes REVLIS.
  3. 3. If A = 1, B = 2, C = 3 and so on up to Z = 26, what is the sum of the values of the letters in the word 'GOLD'?
    1. 35
    2. 40
    3. 38
    4. 39

    Reference: q-f3d53098-112 · Report this question

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    Answer: C. 38

    G = 7, O = 15, L = 12, D = 4. Sum = 38.
  4. 4. If OWL is coded as 152312, how is CUP coded?
    1. 32116
    2. 32117
    3. 32016
    4. 42116

    Reference: q-fceffac3-45 · Report this question

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    Answer: A. 32116

    Each letter is replaced by its position in the alphabet: C = 3, U = 21, P = 16. So CUP is coded as 32116.
  5. 5. In a certain code each letter is replaced by the letter at the same position from the other end of the alphabet (A becomes Z, B becomes Y and so on). How is BRAIN written in that code?
    1. YIZRM
    2. XHYQL
    3. IYZRM
    4. ZJASN

    Reference: q-4f33ac6b-185 · Report this question

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    Answer: A. YIZRM

    Opposite pairs are A-Z, B-Y, C-X and so on. Replacing each letter gives YIZRM.
  6. 6. In a certain code, SCHOOL is written as TDIPPM. How is LIGHT written in that code?
    1. KHFGS
    2. MJHUI
    3. MJHIU
    4. NKIJV

    Reference: q-bd1e2ede-83 · Report this question

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    Answer: C. MJHIU

    Each letter is moved 1 place forward in the alphabet, so LIGHT becomes MJHIU.
  7. 7. If FRIEND is coded as DNEIRF, how is PLANT coded?
    1. TANLP
    2. TLANP
    3. NTALP
    4. TNALP

    Reference: q-7ca2c434-50 · Report this question

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    Answer: D. TNALP

    The letters of the word are written in reverse order, so PLANT becomes TNALP.
  8. 8. If A = 1, B = 2, C = 3 and so on up to Z = 26, what is the sum of the values of the letters in the word 'RAT'?
    1. 39
    2. 35
    3. 45
    4. 33

    Reference: q-cbea503d-111 · Report this question

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    Answer: A. 39

    R = 18, A = 1, T = 20. Sum = 39.
  9. 9. If CAT is coded as 3120, how is BOX coded?
    1. 21424
    2. 31524
    3. 21524
    4. 21525

    Reference: q-6a4d23de-43 · Report this question

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    Answer: C. 21524

    Each letter is replaced by its position in the alphabet: B = 2, O = 15, X = 24. So BOX is coded as 21524.
  10. 10. In a certain code each letter is replaced by the letter at the same position from the other end of the alphabet (A becomes Z, B becomes Y and so on). How is FISH written in that code?
    1. VSIT
    2. RUHS
    3. TQGR
    4. URHS

    Reference: q-4852d385-184 · Report this question

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    Answer: D. URHS

    Opposite pairs are A-Z, B-Y, C-X and so on. Replacing each letter gives URHS.

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