Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

You need to move three matchsticks to form three squares. Can you do it?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

If you say my name, I will no longer exist. What am I?

Chef Andrea has to light the kitchen stoves to open her restaurant for the day. There are three stoves in the kitchen: A glass stove, a brick stove, and a wood stove. She only has one match. Which does she light up first?