Which Burger Is Different in below image?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Find the next number in the following series:
6, 14, 26, 98, __?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Here is a Swiss Cross. You have to make two straight cuts in the figure so that it is divided into four congruent pieces. Also, you should be able to join these pieces into a square then. Can you accept this challenge?

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

Find the hidden tiger in the given optical illusion ?

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?