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)**

**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 – C [.P]*