Instructions

Study the following information and answer the questions given below?
In a certain code, the symbol for 0 (Zero) is @ and for 1 is $. There are no other symbols for all other numbers greater than one. The numbers greater then | are to be written only by using the two symbols given above. The value of the symbol for 1 doubles itself every time it shift one place to the left. Study the following examples:
‘0’ is written as @
‘1’ is written as $
‘2’ is written as $ @
‘3’ is written as $ $
‘4’ is written as $ @@ and so on

Question 101

Which of the following will represent the value of 3 x 3 +1 ?

Solution

Essentially, the code is a binary system where 1 is represented by $ and 0 is represented by @.
3*3+1 will be 10 and in binary system, 10 is written as 1010.
In the given code, 10 will be written as $@$@ i.e. Option B.

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