Harish tthought of a two digit odd number greater than 50. One of its digits was half the other. What could be the nmuber harish thought of?

In this question, it is given that

Harish tthought of a two digit odd number greater than 50. One of its digits was half the other.

Since it is a two digit odd number. So for the number on one's place, we have 5 options which are 1,3,5,7,9. And none of these can be double.

And in the ten's place, it have to be greater then 5. So we have two options, 6 and 8.

And double of 3 is 6, so the number is 63.