Quiz – 1

Answer: The key to solving the number based coding question is to be mindful of not only the value of the numbers but also the place value. For example, in this question, the letters at odd places are one place ahead and those at even places are one place before the corresponding letter in the word.

So, in 35791, 3 is written as 4. Similarly, 5 will be written as 4 and 7 as 8. Also, 9 will be written as 8 and 1 as 0. Thus, we see that the number becomes 44880 and the correct option here is b.

Answer: Here again, we will see what pattern is followed while mapping or coding 35796 to 46823. Clearly, in the code, the letters at odd places are one place ahead and those at even places are one place before the corresponding letter in the word.

The same pattern as in the previous question has been followed and we can see that 4 will be written as 5, 6 will be written as 5, and 8 will be written as 9. Also, 2 will be coded as 1 and 3 will be coded as 4. So. the code becomes 55914 and the correct option is b).

Answer: The two numbers can be obtained as follows:

If we take 1 and multiply it by 3 and repeat the same with all the other digits of the first number, we will have:

• 1 gives 3


• 2 gives 6


• 3 gives 9


• 4 gives 12 = 1+2 = 3


• And 5 gives 15 = 1+5 = 6

• 9 when multiplied by 3, will give 27 = 2+7 = 9.


• Also, 3 when multiplied by 3, will give 9.


• And 2 will similarly yield 6.


• 5 will give 15 = 1+5 = 6


• Thus the new number that we will get is 99966 and the correct answer is A).

Answer: Let us take the first two numbers and try to figure out a rule or the key to this code from them. We have to find a rule that can change 943 to 27129. A hint here is that the number of digits is different. The first two digits of the second number i.e. 27 can be got from 9 by multiplying it with 3. If we multiply 4 by 3 we get 12 and similarly if we multiply 3 by 3 we get 9. So the number we get is 27129 which is the required number.

So let us see what we get when we use this code for 12345.

• 1, when multiplied with 3, will give 3.


• 2, when multiplied by 3, will yield 6.


• Similarly, 3 will yield 9


• And 4 will yield 12 and 5 will give 15.

Answer: C) 00000

Answer: B) 8960

Solution: Clearly, each letter in the word MYSTIFY is moved one step forward to obtain
the corresponding letter of the code.

M – Y S T I F Y

N – Z T U J G Z

So, in N E M E S I S, N will be coded as O, E as F, M as N and so on. Thus, the code becomes O F N F T J T. Hence, the answer is (b) O F N F T J T.

Solution: Clearly, each letter in the word T A P is moved one step backwards to obtain
the corresponding letter of the code. Thus, in F R E E Z E, F will be coded as E, R as Q, E as D and Z as Y. So, the code becomes E Q D D Y D. Hence, the answer is (d) V J E Q D D Y D.

Solution: Clearly, the letters in the word SIKKIM are moved alternately one step forward and one step backwards to obtain the letters of the code.

So, in TRAINING, T will be coded as, U, R as Q, A as B, I as H, N as O and so on. Thus, the code becomes UQBHOHOF. Hence, the answer is (b)

Solution: Clearly, to obtain the code, the first letter of the word MENTION is moved one step backwards and the remaining letters are reversed in order, taking two at a time. So, in PATTERN, P will be coded as 0 and the sequence of the remaining letters in the code would be TAETNR. Thus, the code becomes OTAETNR. Hence, the answer is (c).