How can a man go eight days without sleep?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

What kind of storm is always in a rush?

Which tank will fill first?

What number when divided in half becomes zero?

What is full of holes but still holds water?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?