If ​​$$16 \div 4 = 74 , 21 \div 7 = 33 , 81 \div 9 = 99,$$​ then $$55 \div 5= ?$$​​

16 ÷ 4 = 74 , 21 ÷ 7 = 33, 81 ÷ 9 = 99

1 + 6 = 7

16 ÷ 4 = 4

New number = 74

2 + 1 = 3

21 ÷ 7 = 3

New number = 33

8 + 1 = 9

81 ÷ 9 = 9

New number = 99

Same logic apply on 55 ÷ 5:

5 + 5 = 10

55 ÷ 5 = 11

Thus, the correct answer is (d).