Home › CAT › Quantitative Aptitude › HCF and LCM › The highest common factor is found by taking, fo…
The highest common factor is found by taking, for each common prime, the:
AAverage power
BMiddle power
CSmallest power
DLargest power
Answer & Solution
Correct answer: C. Smallest power
1. Only primes common to both count.
2. The lower exponent is used.
3. You take the smallest power.
_Source: NCERT Class 10 Mathematics, Chapter 1, Real Numbers._
Related questions
The two main tools introduced for studying real numbers here are prime factorisation and:If a prime p divides the square of a number a, the theorem states that p also divides:A number like root 2, which cannot be written as a ratio of integers, is described as:In that case, their lowest common multiple equals:If two numbers share no prime factor at all, their highest common factor must be:Knowing the highest common factor of two numbers lets you find their lowest common multiplFor three numbers, the product of the numbers is:The lowest common multiple of 6, 72 and 120 is: