**Today’s Challenge**

. . . is a number trail question which involves twelve arithmetical steps.

Start with the number 21, then:

- 1/3 of this
- multiply by seven
- +23
- ÷3
- +75%
- +5
- –7
- Find 10% of this
- Square this
- +2
- Double this
- Square root of this

What is your final answer?

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

3 6 7 20 30 36 40 42 49 54 63 64 72 77

Which two numbers, when 10 is added to them, both become square numbers?

**Make 338 Challenge**

Can you arrive at 338 by inserting 2, 3, 4, 6 and 7 into the gaps below?

[(◯+◯)³+(◯×◯)]÷◯ = 338

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

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