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HCF of three numbers is 3 and LCM is 27. Find the product of the three numbers.

Question

HCF of three numbers is 3 and LCM is 27. Find the product of the three numbers.

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Solution 1

Para encontrar el producto de los tres números, podemos usar la relación entre el MCD (HCF) y el MCM (LCM) de los números. La relación es la siguiente:

Producto de los nuˊmeros=HCF×LCM×Producto de los cocientes de los nuˊmeros divididos por su HCF \text{Producto de los números} = \text{HCF} \times \text{LCM} \times \text{Producto de los cocientes de los números divididos por su HCF}

Dado que el MCD (HCF) es 3 y el MCM (LCM) es 27, podemos escribir:

Producto de los nuˊmeros=3×27×Producto de los cocientes \text{Producto de los números} = 3 \times 27 \times \text{Producto de los cocientes}

Para simplificar, llamemos a los tres números a,b, a, b, y c c . Entonces, podemos escribir:

a=3a1,b=3b1,c=3c1 a = 3a_1, \quad b = 3b_1, \quad c = 3c_1

donde a1,b1, a_1, b_1, y c1 c_1 son los cocientes de los números divididos por su HCF (3). Ahora, el MCM de a,b, a, b, y c c es:

LCM(a,b,c)=LCM(3a1,3b1,3c1)=3×LCM(a1,b1,c1) \text{LCM}(a, b, c) = \text{LCM}(3a_1, 3b_1, 3c_1) = 3 \times \text{LCM}(a_1, b_1, c_1)

Dado que el MCM de a,b, a, b, y c c es 27, tenemos:

3×LCM(a1,b1,c1)=27 3 \times \text{LCM}(a_1, b_1, c_1) = 27

Dividiendo ambos lados por 3, obtenemos:

LCM(a1,b1,c1)=9 \text{LCM}(a_1, b_1, c_1) = 9

Ahora, el producto de los números a,b, a, b, y c c es:

a×b×c=(3a1)×(3b1)×(3c1)=27×(a1×b1×c1) a \times b \times c = (3a_1) \times (3b_1) \times (3c_1) = 27 \times (a_1 \times b_1 \times c_1)

Sabemos que:

HCF(a1,b1,c1)=1 \text{HCF}(a_1, b_1, c_1) = 1

y

LCM(a1,b1,c1)=9 \text{LCM}(a_1, b_1, c_1) = 9

Por lo tanto, el producto de a1,b1, a_1, b_1, y c1 c_1 es:

a1×b1×c1=HCF(a1,b1,c1)×LCM(a1,b1,c1)=1×9=9 a_1 \times b_1 \times c_1 = \text{HCF}(a_1, b_1, c_1) \times \text{LCM}(a_1, b_1, c_1) = 1 \times 9 = 9

Finalmente, el producto de los tres números a,b, a, b, y c c es:

a×b×c=27×9=243 a \times b \times c = 27 \times 9 = 243

Por lo tanto, el producto de los tres números es 243.

This problem has been solved

Solution 2

The product of three numbers is equal to the product of their HCF and LCM.

Given that the HCF is 3 and the LCM is 27, we can find the product by multiplying these two numbers.

Product = HCF * LCM Product = 3 * 27 Product = 81

So, the product of the three numbers is 81.

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