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Earn +20 ptsQ: Why is 387 not a prime number?
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Is 387 a prime number?
387 cannot be prime as it divides by 3. A prime number has only 2 factors which are 1 and itself. Composite numbers are every other positive integer except 1 and 0. 1 and 0 are neither prime, nor composite.
What is 23 percent of 387?
To find 23 percent of a number, multiply the number by 0.23. In this instance, 0.23 x 387 = 89.01. Therefore, 23 percent of 387 is equal to 89.01.
How do you round 387?
The answer depends on the degree to which the number needs to be rounded.
What is the number halfway between 387 and 729?
It is 558.
What is 30 percent of 1290?
To find 30 percent of a number, multiply the number by 0.3. In this instance, 0.3 x 1290 = 387. Therefore, 30 percent of 1290 is equal to 387.
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