The question is asking about the number of Ministries in the Union Government of India at two different points in time: at Independence in 1947 and currently.

Option 1 suggests that there were 18 ministries on 15th August 1947. This is confirmed as correct, hence the provided answer is `1 only`.

Option 2 states that there are currently 36 ministries. The correctness of this statement would likely depend on the specific period when the question was asked or the source of information. As cabinet reshuffles often occur, leading to the merger, division, or creation of new Ministries, it is possible that the number fluctuates. As the provided answer indicates `1 only`, it implies that at the specific time when the question was asked, there were not 36 Ministries at the Centre.

Option 3, stating that both statements are correct, is not selected as the correct answer, indicating that both statements were not accurate at the time the question was created.

Option 4, which suggests that both statements are incorrect, is also not the correct answer since the first statement is confirmed to be accurate.