Stars look like points of light in the night sky as they are very far away from us. They give off heat and light. Stars are made of hot, burning gases. Sunrise is the time of day when the Sun appears above the horizon. The Sun does not actually rise. Earth rotates on its axis. This makes the Sun appear to rise each day. The Moon is Earth’s closest neighbor in space. The Moon is 239,000 miles away from Earth. The Sun is 93 million miles away.
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The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21 is the smallest number.