Videos Test Yourself Books MathFacts Math Diagnostics Math Tricks Daily PhysEd
Class Photos Worksheets Insectclopedia Musiclopedia Techlopedia Teacher Timesavers Study Guides
Brothers and Sisters


Pierre and Marie are two children in a big family.
Pierre has twice as many sisters as he has brothers.
Marie has as many brothers as she has sisters.

Question: How many children are there in the family?

See answer

Brain Teasers