Monday 23rd March
What has to be broken before it can be used?
Tuesday 24th March
What is always in front of you but can't be seen?
Wednesday 25th March
What occurs once in a lifetime, twice in a moment but never in one hundred years?
THE LETTER 'M'
Thursday 26th March
What travels around the world but stays in one spot?
Friday 27th March
I am an odd number. Take away a letter and I become even. What number am I?