Logic Riddles

Question: If all of your surrounding is X, you can't Y. X n Y have the same letters. Name X n Y.

Question: How can you make 4 triangles with 6 equal sticks?

Question: I am there !!! but I was!!!

Question: I can climb incredibly high, but only drop so low, it all depends how fast the little ones go....

Question: there are 3 houses. a brown house a green house and white house. if the green house is in front of the brown house. and the brown house is in the back of the green house, Where is the white house?