You may also like

problem icon

Grouping Goodies

Pat counts her sweets in different groups and both times she has some left over. How many sweets could she have had?

problem icon

What Number?

I am less than 25. My ones digit is twice my tens digit. My digits add up to an even number.

problem icon

Odd Tic Tac

An odd version of tic tac toe

The Set of Numbers

Stage: 1 Challenge Level: Challenge Level:1

How about going through the numbers in order, starting with $1$?
Is $1$ a multiple of $2$? Is it greater than $5$?