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dexar [7]
3 years ago
9

Is 68 prime because i am doing homework and im stuck on this and it is very hard so help me please

Mathematics
2 answers:
BlackZzzverrR [31]3 years ago
8 0

If  68  is a prime number, then the only factors it has are  1  and  68.
If it has any other factors besides  1  and  68, then it's NOT prime.

Right away, without any higher math, you can look at just the last digit
in 68 .  The last digit is '8'.  That tells you that '68' is an even number,
and THAT tells you that '2' must be one of its factors.  So '68' is not a
prime number.

The factors of  68  are  1,  2,  4,  17,  34, and  68 .    

68  has four more factors besides  1  and  68, so it's not a prime number.

Diano4ka-milaya [45]3 years ago
8 0
No, it's not. 68 can be divided by 2
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