As easy as 1, 2,3 ?

Good evening I hope everyone had a lovely Tuesday
Here for a bit of fun and a minor brain work out is a brain teaser / maths challenge

Brain teasers

Here are this evenings Riddles for you lets get them brains ticking over

• A plane crashes on the Spanish / French boarder where do you bury the survivors ?
• A dad and son are in a crash and taken to hospital the doctor goes I can't operate on that boy he is my son but how ?