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If two positive integers a and b are written as a = x3y2 and b = xy3 ; x, y are prime numbers, then HCF (a, b) is

  • a)
    x4y3

  • b)
    xy

  • c)
    x2y3

  • d)
     xy2

Correct answer is option 'D'. Can you explain this answer?
Verified Answer
If two positive integers a and b are written as a = x3y2 and b = xy3 ;...
It is given that,
a = x3y2 = x × x × x × y × y
b = xy3 = x × y × y × y
The HCF (Highest Common Factor) of two or more numbers is the highest number among all the common factors of the given numbers.
As HCF is the product of the smallest power of each common prime factor involved in the numbers.
HCF of a and b = HCF (x3y2, xy3)
= x × y × y
= xy2
Therefore,HCF (a, b) is xy2
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Most Upvoted Answer
If two positive integers a and b are written as a = x3y2 and b = xy3 ;...
Correct option D because HCF is the highest common factor.So here in a and in b common factor are x and y and their HCF is x2y2.
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Community Answer
If two positive integers a and b are written as a = x3y2 and b = xy3 ;...
Solution:

Given, a = x4 y2 and b = x2 y3 where a and b are prime numbers.

We need to find HCF(a, b).

Calculating HCF:

HCF(a, b) = x2y2

Explanation:

To find the HCF of a and b, we need to find the common factors of a and b and then take the product of the highest power of each common factor.

Let's find the factors of a and b.

Factors of a are: x, x, x, x, y, y.

Factors of b are: x, x, y, y, y.

Common factors are: x, x, y, y.

Highest power of x: x2

Highest power of y: y2

Therefore, HCF(a, b) = x2y2.

Hence, the correct answer is option 'D'.
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