Question

Which is the prime factorization of 98?

A.
22 • 72

B.
2 • 7

C.
2 • 72

D.
22 • 7

Answer 1

Answer:
The Prime Factors are:
2 x 7 x 7

In Exponential Form:
21 x 72

Prime Factors Tree
98
/ \
2 49
/ \
7 7

Answer 2

dividing the given number (in this case, 98) by prime numbers until you cannot divide further. Given the number 98, then, let us start by dividing by 2. Division by 2 is typically a good starting point for even numbers, since 2 is prime. We are left with 49, and we now know that 2 is a prime factor. We can divide 49 by 7, leaving us with 7 and the knowledge that 2 and 7 are prime factors. We can't divide 7 any further, so it must be the last prime factor. In other words, 98 = 2 x 7 x 7. This is the prime factorisation of 98.

Answer 3

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