Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

Name a key which is hardest to turn.

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

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

What has no start, end, or centre?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

How far can you walk into the woods?

A pet show was happening in my locality. I went down along with my kids. In that show, I noticed that all except two of the entries were cats. All except two were dogs and all except two were Monkeys.

Can you find out how many of each animals were present in that pet show?