What number comes next in this sequence:
7 8 5 5 3 4 4 _

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

Accidentally, two trains are running in the opposite direction and enter a tunnel that is 200 miles long. A supersonic bird that has fled the lab and taken shelter in the tunnel starts flying from one train towards the other at a speed of 1000 mph. As soon as it reaches the second train, he starts flying back to avoid collision and meets the first train again at the other end. The bird keeps flying to and fro till the trains collide with each other.

What is the total distance that the supersonic bird has traveled till the trains collided?

What goes up but never comes down?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

Different lights make me strange by changing me into different sizes. What am I?

Complete the table series riddle by finding the number that can replace "??".

What can you deduce from the following BrainBat?

CRY
LMKI

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?