Question

1.The h.c.f of 12 and 18 is
2.the l.c.m of 15 and 25 is
3.On multiplying x+3 and x+2 we get
4.the h.c.f of 6 and 32 is
5.the l.c.m of 5 and 7 is

Answer 1

1- HCF=

12 = 2×2×3

18 =2×3×3

2and 3 are Common Hence,HCF= 6

2--LCM

15 = 3×5

25= 5×5

LCM= 3 × 5²= 75

3--

(x+a)(x+b)= x²+(a+b)x+ ab

4 --

6= 2×3

32= 2×2×2×2×2

HCF= 2

5--

5=5

7=7

both are prime numbers

LCM=5×7=35