Where the orthocentre, centroid or circumcentre lies (inside, on or outside)

This type of question, asked 3 times: CDS 2 2017, CDS 1 2018, CDS 1 2019. All 3 questions below, oldest first.

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Question 1
CDS 2 2017
85 $Consider the following statements : 1. The point of intersection of the perpendicular bisectors of the sides of a triangle may lie outside the triangle. 2. The point of intersection of the perpendiculars drawn from the vertices to the opposite sides of a triangle may lie on two sides. Which of the above statements is/are correct ?$
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Question 2
CDS 1 2018
78 $Consider the following statements : 1. The orthocentre of a triangle always lies inside the triangle. 2. The centroid of a triangle always lies inside the triangle. 3. The orthocentre of a right angled triangle lies on the triangle. 4. The centroid of a right angled triangle lies on the triangle. Which of the above statements are correct ?$
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Question 3
CDS 1 2019
29 $Which one of the following is correct in respect of a right angled triangle ?$
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Question 1