Math Riddles

Question: Two simple warriors: a vegetable and none. It depends on whether they work together to reduce infinity to one.

Question: Use the numbers 1, 2, 4, 5, 6, and 8 and the symbols (x) and (=) to form a true equation. Note: Each number and symbol is to only be used once and no extra number or symbol is included.

Question: A man lives in an apartment building on the 100th floor. He rides the elevator all the way down to floor 1 every morning then all the way up to floor 100 every evening. The elevator is coin-operated. It costs $0.25 per floor for floors 1-25, $0.50 per floor for floors 26-50, $0.75 per floor for floors 51-75, and $1.00 per floor for floors 75-100. How much money does the man spend each day riding the elevator?

Question: If you have an 11 minute and 13 minute hourglass, how can you accurately time 15 minutes?

Question: What is the next number in the sequence? 1 11 21 1211 111221 312211