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How many odd factors does 768 have?
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08 Oct 2018, 12:45
08 Oct 2018, 12:45
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31% (01:00) correct
68% (01:07) wrong based on 47 sessions
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How many positive odd factors does 768 have?
A. zero
B. one
C. two
D. three
E. four
A. zero
B. one
C. two
D. three
E. four
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Re: How many odd factors does 768 have?
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09 Oct 2018, 07:25
09 Oct 2018, 07:25
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Carcass wrote:
How many positive odd factors does 768 have?
A. zero
B. one
C. two
D. three
E. four
A. zero
B. one
C. two
D. three
E. four
TIP: When an integer properties question features a large number, it's often useful to find the prime factorization of that number.
768 = (2)(2)(2)(2)(2)(2)(2)(2)(3)
At this point, we can see that 3 is an odd factor.
We can also see that, if we combine 3 with any other prime factor, the resulting product will be even.
We should also remember that 1 is a factor of ALL positive integers.
So, the only odd factors of 768 are 1 and 3
Answer: C
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Re: How many odd factors does 768 have?
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31 Mar 2021, 07:15
31 Mar 2021, 07:15
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