Question

Chapters: 1. Real Numbers 2. Polynomials
1. Find the HCF and LCM of 6,72 and 120, usi
2. Find the HCF and LCM of 510 and 92 and als
3. Explain why 7 x 11 x 13 + 13 is a composite
4. Prove that V3 is an irrational number.
5. Without actually performing the long divi
terminating decimal expansion or a non-tem
6. Check whether a terminating decima
14588
625​

Answer 1

Answer:

answer 1 = 360

Step-by-step explanation:

We have : 6=2×3,72=23×32,120=23×3×5

Here, 21 and 31 are the smallest powers of the common factors 2 and 3 respectively.

So, HCF(6,72,120)=21×31=2×3=6

23,32 and 51, are the greatest powers of the prime factors 2,3 and 5 respectively involved in the three numbers.

So, LCM(6,72,120)=23×32×51=360.