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Explanation

Russia is the biggest country in the world.

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What's the angle between the minute hand and the hour hand at a quarter past three?

10 degrees 90 degrees 45 degrees 7.5 degrees.

Fun Facts About Number 0 and 1

The Hindu-Arabic numeral system was invented almost eighteen hundred years ago; however, it turns out that we know too little about numerical digits we have been using to this day! Read the most awesome facts about “zero” and “one.”