I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

I am an odd number. Take away a letter and I become even. What number am I?

What goes up but never comes down?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

No matter how little or how much you use me, you change me every month. What am I?

I have eight fingers and two thumbs but I do not live. What Am I?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.