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A full bottle of green tea weighs 350 grams.
With half the tea consumed, it weighs 200 grams.
What is the weight of the empty bottle?
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When placed on a scale, a container of water measures 20 kg, while a steel ball measures 2 kg. Now, the steel ball is dipped into the water, as shown in the diagram above. What will be the new reading on the scale?
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In a circle, a chord divides the diameter perpendicularly into lengths of 1 and 9. What is the length of the chord?
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Mother came home and saw a broken vase. She immediately questioned her 4 children, who replied as follows:
Alex: "It wasn't Brian. It was Daniel."
Brian: "It wasn't Charlie. It wasn't Daniel."
Charlie: "It wasn't Daniel. It was Brian."
Daniel: "It was Charlie. It was Brian."
It is known that each of them told one true and one false statement. Who broke the vase?
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How many triangles are there in the figure above?
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