Ten coins have been arranged as you can see in the given picture. In this arrangement, a triangle is formed pointing upwards. You have to invert the position of the triangle and make it point downwards while changing the position of 3 coins only. Can you do it?
Can you replace the question mark with the correct number?
What is the next number in this matchsticks series riddle?
As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.
