Coding & Decoding
30 questions available
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Q21.If BOX is coded as CDPQYZ, how would you write COAT in code?
Correct Answer: D
B -> C (+1), O -> D (-11), X -> P (-8). Suffix is BCUV. Similarly: C -> D (+1), O -> D (-11), A -> P (-8), T -> Q (-3) + BCUV = DEPQBCUV.
Q22.If GOLFER is coded as EOJFCR, then STUCK will be written as?
Correct Answer: C
The pattern shifts odd-positioned letters back by 2 positions (S-2=Q, U-2=S, K-2=I) and leaves even-positioned letters unchanged (T=T, C=C). This yields QTSCI.
Q23.If A = 1, FAT = 27, then FAITH = ?
Correct Answer: D
Each letter's alphabet position is summed: F(6) + A(1) + I(9) + T(20) + H(8) = 44.
Q24.If 135 x 604 = 43056 and 27 x 698 = 82976, then 32 x 864 = ?
Correct Answer: A
The mapping of digits from (ab) x (def) is f, a, e, b, d. Applying this to 32 x 864: f=4, a=3, e=6, b=2, d=8, resulting in 43628.
Q25.In a certain code 'GIVE' is written as '5 1 @ ©' and 'FAIL' is written as '% 2 1 9'. How is LEAF written in that code?
Correct Answer: A
Mapping: L=9, E=©, A=2, F=%. Concatenating these gives 9©2%.
Q26.If BOOK is coded as ANPL, what is the code for HAND?
Correct Answer: A
The letter shifts are -1, -1, +1, +1. H-1=G, A-1=Z, N+1=O, D+1=E, yielding GZOE.
Q27.If 2 x 3 = 49 and 3 x 2 = 94, then 4 x 3 = ?
Correct Answer: B
The rule is to concatenate the squares of both digits: 4²=16 and 3²=9, which gives 169.
Q28.If FACE is coded as 6135, then how is ACE coded?
Correct Answer: C
Letter position coding where F = 6, A = 1, C = 3, and E = 5. By isolating the letters for ACE, we get 135.
Q29.If STEP is coded as 3165, then how is PETS coded?
Correct Answer: A
The letter mapping from STEP = 3165 is: s = 3, t = 1, e = 6, p = 5. Rearranging to PETS gives: p(5), e(6), t(1), s(3) = 5613.
Q30.If FEED is coded as 4332, then how is DEEF coded?
Correct Answer: A
Letter coding where F=4, E=3, and D=2. Reversing FEED to DEEF gives the reversed code: 2334.