What is so fragile that saying its name breaks it?

What can you hold in your right hand, but never in your left hand?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

A landlord calls both of his sons and tells them that their horses will now decide who will transfer the inheritance. He tells them to race along the land till the end and the one whose horse will be slower will win and be the heir to all the property.

Both of them keep wandering for days but to no result. Then they ask a wise man regarding it. The man advises them on the matter after which they jump on the horses and race as fast as they can till the end. Why did they do it?

What did the wise man say?

I am sure no one can have two things for dinner. what are they?

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

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?