Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
8.9k views
in Number System by (50.2k points)
closed by

Find LCM and HCF of the integers 42, 63 and 140 by using prime factorization method.

1 Answer

+1 vote
by (55.4k points)
selected by
 
Best answer

Given numbers are 42, 63 and 140

Factorization of 42, 63 and 140

Here, 71 is the smallest power of the common factor 7.

So, HCF (42, 63, 140) = 7

22 × 32 × 51 × 71 are the greatest powers of the prime factors 2, 3, 5 and 7 respectively involved in the given three numbers .

LCM of these three integers = 2 × 2 × 3 × 3 × 5 × 7 = 1260

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...