This is another trick question. The family tree below shows the children and grandchildren of a female carrier of colour-blindness and a male who is not colour-blind. The question is: How many of the daughters or granddaughters are NOT colour-blind? ==================== The answer is 5 (not 7). Beware, do not count daughters-in-law and other members[…]
Maths tip: Read the question carefully. In this question, 50% of water left in the tank is not 50ml but rather 60ml.
Maths tip: Maths questions can be pretty tricky too. Remember to check your work! Here is an example. Give it a go!