A snail sits at the bottom of a 30-foot wall. Each hour it can climb three feet, but it then slips down two feet. How long does it take the snail to reach the top?
A farmer needs to cross the river with his fox, his chicken and a bag of corn. However, the boat can only fit the farmer and one other thing at a time. The problem is, the fox and the chicken are both hungry, so if he leaves the fox and chicken together, the fox might eat the chicken. If he leaves the chicken and corn together, the chicken might eat the corn. What he will do now
Jane’s mother has four children. The first child’s name is Spring, the second child’s name is Summer and the third child’s name is Autumn. What is the fourth child’s name?