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

Before Mount Everest was discovered, what was the highest mountain in the world?

I have branches, but no fruit, trunk or leaves. What am I?

What does this Rebus Picture mean?

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

Can you count the number of lines in the below picture?

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?

In the image given, you can find several triangles. Can you count them all?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?