**Today’s Challenge**

Follow the rules below and eliminate every number from a given list, except one. Which number will be the last one to remain?

List the multiples of 10 from 10 to 100 inclusive, then eliminate:

- multiples of 4
- factors of 100
- multiples of 3

Which is the only number that remains?

**The 7puzzle Challenge**

The playing board of **the 7puzzle game** is a 7-by-7 grid containing 49 different numbers, ranging from **2 **up to **84**.

The 6th & 7th columns of the playing board contain the following fourteen numbers:

5 7 9 24 28 30 32 36 40 49 50 54 64 66

How many multiples of 4 are listed?

**Make 352 Challenge**

Can you arrive at 352 by inserting 2, 4, 8, 11 and 16 into the gaps on each line?

- (◯+◯)×(◯+◯)–◯³ = 352
- ◯²×◯×◯×◯÷◯ = 352

**Answers **can be found **here**.

**Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.**