How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

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

Find the missing number in the image below.

I’m tall when I’m young, and I’m short when I’m old. What am I?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

Can you find the mistake in the below statement?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?