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If n=4p, where p is a prime number greater than 2, how many different positive even divisors does n have including n?
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- Given that n=4p and p is prime greater than 2.
and all prime numbers greater than 2 are odd
also when odd number (in this case prime number p) is when multiplied by even number (in this case 4)always results in even number
example:
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1. taking p = 3 we have n=12 and positive even divisors are 2,4,6,12
2. taking p = 5 we have n=20 and positive even divisors are 2,4,10,20
and so on ....
thus the required result is 4.
- 12 years agoHelpfull: Yes(26) No(8)
- we can write the number as n=4p => 2*2*p
the number will be divisible by 4, 2, p ,2p and n (the number itself).
but since p is greater then two and is a prime number then it can never be even
so we are left with (2,4,2p,n) so 4 is the answer
- 12 years agoHelpfull: Yes(16) No(4)
- 2,4,n,n/2are the positive even divisors including n
- 12 years agoHelpfull: Yes(6) No(2)
- If n=4p, and p is a prime No. and it implies that 2,4 and the value of n are the even divisors,
Because, any prime no. greater than two can not have even divisors.
Thus, there are only three even divisor( 2,4 and Value of n) - 12 years agoHelpfull: Yes(4) No(6)
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we can write the number as n=4p => 2*2*p
the number will be divisible by 4, 2, p and n (the number itself).
but since p is greater then two and is a prime number then it can never be even
so we are left with (2,4,n) so 3 is the answer
- 12 years agoHelpfull: Yes(3) No(1)
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