If a wheel has 54 spokes, how many spaces are there between the spokes?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

In the image given, you can find several triangles. Can you count them all?

I know a nine-letter word having only one vowel.
Do you ?

What has a ring but no finger?

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Can you fill the blank with the correct number?

6 30 870 756030 _____

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?