Can you find the dog hidden in a group of pandas?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

You need to arrange three 7 and mathematical symbols to form number 1?

What is the word or phrase below?
R | E | A | D

Only one colour, 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?

The more of this there is, the less you see. What is it?

Can you make four (4) nines (9) equal 100?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?