1. **State the problem:** Given two numbers 156 and 288, we need to find:
(a) their greatest common factor (g.c.f.),
(b) their least common multiple (l.c.m.),
(c) the quotient of their product divided by the g.c.f.,
(d) a conclusion based on the above results.
2. **Find the g.c.f. (greatest common factor):**
We use the prime factorization method.
Prime factors of 156:
$$156 = 2 \times 78 = 2 \times 2 \times 39 = 2^2 \times 3 \times 13$$
Prime factors of 288:
$$288 = 2 \times 144 = 2 \times 2 \times 72 = 2^4 \times 3^2$$
The g.c.f. is the product of the lowest powers of common prime factors:
$$\text{g.c.f.} = 2^{\min(2,4)} \times 3^{\min(1,2)} = 2^2 \times 3^1 = 4 \times 3 = 12$$
3. **Find the l.c.m. (least common multiple):**
The l.c.m. is the product of the highest powers of all prime factors:
$$\text{l.c.m.} = 2^{\max(2,4)} \times 3^{\max(1,2)} \times 13^{\max(1,0)} = 2^4 \times 3^2 \times 13 = 16 \times 9 \times 13$$
Calculate:
$$16 \times 9 = 144$$
$$144 \times 13 = 1872$$
4. **Divide the product of the two numbers by the g.c.f.:**
Calculate the product:
$$156 \times 288 = 44928$$
Divide by g.c.f.:
$$\frac{44928}{12} = \frac{\cancel{12} \times 3744}{\cancel{12}} = 3744$$
5. **Formulate a conclusion:**
Compare the quotient with the l.c.m.:
$$3744 \text{ (product/g.c.f.)} \quad \text{and} \quad 1872 \text{ (l.c.m.)}$$
Since $3744 > 1872$, the product divided by the g.c.f. is greater than the l.c.m.
**Final answers:**
(a) g.c.f. = 12
(b) l.c.m. = 1872
(c) product/g.c.f. = 3744
(d) The product of the two numbers divided by the g.c.f. is greater than the l.c.m.
Gcf Lcm Relationship 0Dfd45
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