write 98 as product of its prime factor
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Step-by-step explanation:
Answer:
98
=
2
⋅
7
⋅
7
Explanation:
Since
98
ends with an even digit, we can tell that it is divisible by
2
:
98
2
=
49
Try each possible prime factor in turn:
49
ends in an odd digit, so is not divisible by
2
.
The sum of its digits is
4
+
9
=
13
, which is not divisible by
3
, so
49
is not divisible by
3
either.
49
does not ends with
5
or
0
, so is not divisible by
5
.
49
is divisible by
7
. We find:
49
7
=
7
So:
98
=
2
⋅
7
⋅
7
rose279:
Thanks
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