**The Main Challenge**

This is a problem-solving question from a typical *Eleven Plus* exam many years ago. Can today’s generation solve it?

Twice one hundred and sixty-eight added to four times another number gives a total of four hundred and eighty. What is the other number?

**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 4th & 7th columns contain the following fourteen numbers:

3 5 6 9 20 24 28 32 42 50 63 66 72 77

Which two numbers above, when multiplied by 7, have their answers appearing on the list?

**T****he Factors Challenge**

**The Mathematically Possible Challenge**

Using **1**, **3** and **9 **once each, with + – × ÷ available, which are the only TWO numbers it is possible to make from the list below?

5 10 15 20 25 30 35 40 45 50

#*5TimesTable*

**The Target Challenge**

Can you arrive at **346** by inserting **1**, **2**, **3**, **4** and **5** into the gaps below?

- ◯³×◯–(◯+◯)²–◯² = 346

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

**Click Paul Godding for details of online maths tuition.**