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In order for a pump to work it needs something to Prime(suck) and because water and fuels arent solid enough you have to prime it. meaning fill the suction hose up so there is no air so the pump can suck. if there is air in it it wont work. as the pump sucks up the fuel/water in the hose it drags up the rest of whats in the tank or under the ground or what every your pumping. a self priming pump has a foot valve(one way hose) on it. when the pump suck up and is turned off all that is in the suction hose does not run back out it stays in the because of the foot valve.
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Why is 55555 not a prime numbe?
It is not a prime number because 5 by it self is a prime number but for example 25 is not a prime number because you can devide it with somrthing else! ( A prime number is a number that can onley be divided by the number 1 and it self)
The only prime number that is neither prime nor composite?
The question is internally self contradictory. There is no prime number that is not prime.
Is 11 prime or composite number and why?
11 is a prime number because it is only evenly divisible by its self and one . Or to put it another way the prime factors of 11 are 1 and 11 By definition a numbers is prime if it has no other prime factors then its self and 1.
What type of number has exactly 2 factors?
a prime number. a prime number is just one and it's self
Can a prime number be a multiple of any other number except it self?
Yes. A prime number is a multiple of 1.
