Question

Move only three coins and turn the triangle upside down.

Answer 1

from bottom form 1st remove one and from last remove one coin from top remove the coin and place it in the bottom and the 2 coins from bottom place it on the way top the triangle will be reversed by removing 3 coins

Answer 2

Answer:

from bottom from first remove one and from last remove one coin from top remove the coin and place it in the bottom and the two coins from bottom place it on the way of the triangle will be river by removing 3 coins