What is the next number in the series?

15 29 56 108 208 ?

The dirtier I get, the whiter I look. Who am I?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

In the given picture, in how many ways can you read the word "Tiger"?

What does this below rebus puzzle mean?

How many Watermelons are there in the below picture?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?