Math Riddles

 
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Question: Which is correct, 9 and 5 is 13 or 9 plus 5 is 13?

Hint: What is 9 plus 5?

Answer: Neither. 9 and (plus) 5 is 14, not 13.

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Logic Riddle (medium)

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By daphne101

Question: what are the next two letters in this sequence: A, E, F, H, I, K, L, M,

Answer: N, T

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Question: There is a 100 pound watermelon laying out in the sun. 99 percent of the watermelon's weight is water. After laying out for a few hours 98 percent of the watermelon's weight is water.

How much water evaporated?

Answer: 50 pounds.

In the beginning it is 99 pounds water and 1 pound other stuff. At the end the 1 pound other stuff is 2 percent so the total weight is 50 pounds. 50 pounds - 1 pound other stuff = 49 pounds water. So 99 pounds - 49 pounds = 50 pounds water lost.

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By roxanelaster80

Question: Can you find the missing number in the below series? 43, 8, 38, 9, 34, 11, _, 14

Answer: One series is 8, 9, 11, 14 (add 1, 2, 3) and the second series is 43, 38, 34, ? (subtract 5, 4 - next number to substract is 3). Correct answer is 31

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Question: There are three jars full of equal amounts quarters, dimes, and penny's. Which one has the highest value?

Answer: The jar full of quarters would have the highest value because a quarter is worth more than a dime and penny. Amount refers to quantity, so if they have equal amounts there will be an equal number of each.

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