Last updated on October 21st, 2021 at 08:55 pm
Solution :
- Factor of 20 are – 1,2,4,5,10,20
- Factor of 25 are – 1,5,25
- Common factors are 1 and 5
(3) Write first three common multiples of 3 and 5. (2)
Solution:
- Multiples of 3 are – 3,6,9,12,15,18,21,24,27,30,33,36,39,42,45
- Multiples of 5 are – 5,10,15,20,25,30,35,40,45,50,55,60,65,70,75
- Common multiples are – 15 , 30 and 45
M603.2 Finds L.C.M and solves practical problems related to it.
Q – 4 Do as directed.
Find L.C.M of 40 and 60. (2)
LCM of 40 and 60 is 120
Which smallest 3-digit number is divisible by 12, 18 and 24? (3)
12 – 12 , 24 ,36 , 48 ,60,72,84,96,108,120,132,144,156
18 – 18 ,36 ,54 ,72 ,90 ,108 ,126 ,144 ,162 ,180
24 – 24 ,48 ,72 ,96 ,120 ,144 ,168
Smallest 3 Digit number is 144
Correct Answer –
1 – D Triangle
2 – B – A
Correct Answer –
3 – A [X]
4 – B [ B and C]
5 – CÂ [.P]
