A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. 123 people participate in the contest. When the boxes are opened, it turns out that 43 people have guessed none of the fruits correctly, 39 people have guessed one fruit correctly, and 31 people have guessed two fruits correctly.
How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly

Why do people go to bed?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

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

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?