And more puzzles...

Stepping up

I am lucky, although I only have a small garden, my house is on a hill and I have 10 steps up to my garden. During this period when we have been restricted with our exercise, I have used these steps to help increase my fitness... a little.

Ten card maths

You require a set of 10 digit cards, 0 to 9

Arrange the ten cards to make five two digit numbers which are all multiples of 2.

Arrange the ten cards to make six  numbers which are all multiples of 3.

Arrange the ten cards to make five  numbers which are all multiples of 7.

Arrange the ten cards to make five numbers which are all multiples of 9.

I use the steps for step ups!

I walk one up and then one down, then two up and two down and then three up and three down until I get to the top (ten up and then 10 down).

At that point I start going down, with nine up and nine down until I finish with one up and one down.

Work out how many step ups I have done altogether.

Jenny, my daughter, said 'If there were 12 steps then you would need to do 20% more step ups.'

How did she work that out so quickly? I don't think she is correct. Is she and can you explain?

The Old Young Ones

Did you know that in France you do not become a teenager until you are 17?

Can you explain why?

Also, whilst we are in France, you can still be in your sixties when you are 79 years old.

Why is this?