Question

If A, B, C, D,......... Z represents numbers from 1, 2, 3,...... 26. Key can be anything from 1 to 25. For a key of 2, every letter shifts 2 places to right. A becomes C, Z becomes B and so on. If key is equal to 9, match the normal letters with encrypted letters.

$\begin{array}{cc}\text{Normal Letter}& \text{Encrypted Letter}\\ 1A& aY\\ 2F& bD\\ 3P& cO\\ 4U& dI\\ 5Z& eJ\end{array}$

• A. 1b, 2c, 3a, 4e, 5d
• B. 1e, 2c, 3b, 4d, 5a
• C. 1e, 2c, 3a, 4b, 5d
• D. 1e, 2b, 3c, 4d, 5a

Answer 1

The correct option is C

1e, 2c, 3a, 4b, 5d

Since key = 9, we have to shift letters 9 places to the right.

$\begin{array}{cccc}\text{Given position}& \text{Key}& \text{Encrypted letter at position}& \text{Encrypted letter}\\ A-1& 9& 10& J\\ F-6& 9& 15& O\\ P-16& 9& 25& Y\\ U-21& 9& 30-26=4& D\\ Z-26& 9& 35-26=9& I\end{array}$