Q3.

Q4.

In this question, a group of number/symbol is coded using letter codes as per the codes given below and the conditions which follow. The correct combination of codes following the conditions is your answer. 
Note: If none of the conditions apply, then codes for the respective number/symbol are to be followed directly as given in the table.

Conditions: 
(I) If the first element is a number and the last a symbol, the codes for these two (the first and the last elements) are to be interchanged. 
(II) If the first element is an odd number and the last an even number, the first and last elements are to be coded as ©. 
(III) If the third element is a perfect cube, the second element is to be coded as the code for the third element. 
What will %987 be coded as?

Q5.