Glad you are back again, Jenilia!

]]>Please visit more, try some of the puzzles ganesh sets, and ask any quesitons you want.

]]>Therfore, she takes 6 days to paint the house.

Meera can paint the whole house 2 days faster.

So, she can paint the house in 4 days.

In one day, Meera can paint 1/4 of the house.

If both of them paint the house together, in one day,

they can paint (1/6+1/4) of th house. That is,

10/24 or 5/12. Therefore, the whole house can be painted

by them in 12/5 days, that is 2 2/5 days. ]]>

The answer is 2 3/4 days. I figured out the answer in school which is correct. But when I came home I forgot the answer. Now I am dieing to know the answer.]]>

So, it is really as easy as thinking "I choose the numbers 1 to 4 in random order, what are the chances of them being perfectly 4321?"

Do you want to try to figure THAT one out? (Hint: how many combinations are possible, and how many match what you are after?)

]]>For example, samples from your first link:

Junior:

"The sum of seven, single-digit positive whole numbers is 17. Six of these numbers are equal, so what is the other number?"

Intermediate:

"Alice's room is furnished with three-legged stools and four-legged chairs. There are 17 legs in all (excluding Alice's!). How many three-legged stools are there?"

Senior:

"The cards in a set of 36 are numbered 1 to 36. The cards are shuffled and four cards are dealt. What are the chances of them being dealt in descending order?"

mathsyperson wrote:

]]>If you want to try some of the questions, there are some samples here or try the most recent junior, intermediate or senior past papers.