question_answer

Code the group of digits as per the scheme and conditions given below.                                              (SOF IMO 2016) Digit      :                                               5 7 0 9 3 1 6 4 8 2 Letter/symbol:                            K E H  \[\Delta \] A J Q R @ Conditions: (i) If the first as well as the last digit is odd their codes are to be interchanged. (ii) If the first digit is even and the last digit is odd both are to be coded by the code for odd digit. (iii) If the last digit is '0' it is to be coded by 'X'. (iv) If the first as well as the last digit is even both are to be coded by \['-'.\] 586403

A)  KRJQH\[\Delta \]          

B)  \[\Delta \]RJQHK          

C)  \[\Delta \]HJQRK          

D)  KHJQR\[\Delta \]