Home
Class 10
MATHS
Find the HCF and LCM of the following by...

Find the HCF and LCM of the following by prime factorisation method :
(i) 12,18,24 (ii) 15,25,45

Text Solution

Verified by Experts

(i)
`:. 12=2xx2xx3`
`18=2xx3xx3`
`24=2xx2xx3xx2`
Now, HCF `=2xx3=6`
and `LCM=2xx2xx3xx3xx2=72`
(ii)
`:. 15=3xx5`
`25=5xx5`
`45=3xxx5xx3`
Now, HCF`=5`
and LCM`=3xx5xx5xx3=225`
Promotional Banner

Topper's Solved these Questions

  • REAL NUMBERS

    NAGEEN PRAKASHAN|Exercise Solved Example|15 Videos

  • REAL NUMBERS

    NAGEEN PRAKASHAN|Exercise Problems From NCERT/ Exemplar|11 Videos

  • QUADRATIC EQUATIONS

    NAGEEN PRAKASHAN|Exercise Revision Exercise Long Answer Questions|6 Videos

  • SOME APPLICATIONS OF TRIGONOMETRY

    NAGEEN PRAKASHAN|Exercise Long Answer Questions|5 Videos

Similar Questions

Explore conceptually related problems

Find the HCF and LCM of the following by prime factorisation method : (i) 12 and 15 (ii) 20 and 25 (iii) 28 and 42 (iv) 336 and 56 (v) 12,15 and 21 (vi)10,20 and 30

Find the L.C.M.of the following by prime factorisation method: 12,24,36

Find the HCF and LCM of 90 and 144 by the prime factorisation method.

Find the HCF and LCM of 12,72 and 120 by prime factorization method.

Find the HCF and LCM of the following pairs using prime factorisation method: (i) 140 and 154 (ii) 504 and 735

Find the HCF and LCM of 126 and 156 using prime factorisation method.

Find the HCF and LCM of 144,180 and 192 by prime factorisation method.

Find the cube roots of the following using prime factorisation method

Find the LCM and HCF of 6 and 20 by the prime factorisation method.