Question

Prime factorisation of 15: Prime factorisation of 90: LCM of 15 and 90= ) Prime factorisation of 18: Prime factorisation of 24 : LCM of 18 and 24 = c) Prime factorisation of 25: Prime factorisation of 15 : LCM of 25 and 15= (d) Prime factorisation of 27 : Prime factorisation of 42 LCM of 27 and 42 = Using prime factorisation method, find the LCM. (a) 16 and 20 20 (b) 18 and 275y (c) 12 and 22 32(d) 15 and 24 t20(e) 8 and 16 (0) 25 and 35/72G (g) 36 and 45 (606(h) 33 and 44 13(i) 20 and 35 1 10) 54 and 38 to 26 e yvee​

Answer 1

Answer:

Step-by-step explanation:

15=3*5

90=3*30=3*3*10=3*3*2*5

LCM of 15 and 90 is 3*5*2*3=90

18=2*9=2*3*3

24=2*12=2*2*6=2*2*2*3

LCM is=2*3*3*2*2=72

25=5*5

15=3*5

Lcm is=3*5*5=75

27=3*9=3*3*3

42=2*21=2*3*7

LCM is 3*3*3*2*7 =378

LCM of 16,20,20

16=2*8=2*2*2

20=2*2*5

lCM is 2*2*2*2*5=80

LCM of 18,27,5

18=2*9=2*3*3

27=3*3*3

5=1*5

LCM is 2*3*3*3*5=270

LCM of 12,22,32

12=2*2*3

22=2*11

32=2*2*2*2*2

LCM is 2*2*3*11*2*2*2*2=2112

LCM of 15,24,120 is 120

15=3*5

24=2*2*2*3

120=2*2*2*3*5

LCM is=3*5*2*2*2*5=120

LCM of 8 and 16 is 16

8=2*2*2

16=2*2*2*2

LCM is 2*2*2*2=16

25,35,72

25=5*5

35=5*7

72=2*2*2*3*3

LCM is 5*5*7*2*2*2*3*3=12600

36,45,60

36=2*2*3*3

45=5*3*3

60=2*2*3*5

LCM is 3*2*2*3*5*2*2*5=3600

33,44,13

33=3*11

44=2*2*11

13=1*13

LCM is 3*11*2*2*13=1716

20 and 35

20=2*2*5

35=5*7

LCM is 5*2*2*7=140

54,38,26

54=2*3*3*3

38=2*19

26=2*13

LCM is 2*3*3*3*19*13=13338