Trying to help my daughter. 6 grade math.?

Question

The related nr- pair (125,2) represents the 2 factors of a mystery nr.
A) Whats the mystery Nr?
B)Whats t prime factorization of this nr?
C)How can the prime factorization be written using exponents?

Pranil · Accepted Answer

125, 2 in this pair GCD of numbers is 1 as they do not have common factor.
in english it is called co-prime numbers.
A) Whats the mystery Nr? may be co-prime having GCD 1
B)Whats t prime factorization of this nr? 125 = 5 × 5 × 5 (all the factors are prime called prime factors.
C)How can the prime factorization be written using exponents? 125 = 5^3 and 2 = 2^1
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Sde · Answer

a) its factors are 2 and 125, so the number is 2*125 = 250 (as it doesn't have any other factors and 2 and 125 have no common factors).
b) 2 is already a prime,
125 = 5*25 = 5*5*5
So 250 = 2*5*5*5.
c) 250 = 2*(5*5*5) = 2^1 * 5^3

Trying to help my daughter. 6 grade math.?

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