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How many different ways can Melanie put all 4 crayons into the 2 boxes so that each box has at least 1 crayon?
How many students would occupy a certain portion of seats in the room?
What is the first time after midnight that the number you see (with the colon removed) is also a perfect square?
Which house should the bus stop so that the sum of walking distance among all children will be the least?
Order the digits 1 through 9 so that the sum of any two adjacent numbers is a triangular number.
What are the possible values of a?
What is the area of the shaded part?
How can you be sure that you will always end at this number, no matter what number you chose at the beginning?
Jump into the water with scuba diver Sam and discover the amazing world of underwater animals.
