CONDITIONS:
I. if the first as well the last digit is odd ,both are coded as ©
Ii. if the first as well as last digit is even ,thier codes are to be swapped
Iii. if ‘O’ is the last digit ,it is to be code as ★
Expression : 468910
Since the last digit is '0', rule (iii) will be applied and 0 is coded as = ★
=> Code for 468910 = $HJ@K★
=> Ans - (D)
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