Question

write 98 as product of its prime factor​

Answer 1

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