Question

1. If the GCF(50,100)=50, then the LCM(50,100) will be?
2. If the LCM(10,20)=20, then the GCF(10,20)will be?
3. List 3 twin primes.
4.Factorise by factor tree and prime factorisation;
1234
563
37

Answer 1

Step-by-step explanation:

1. GCF = 50

ab=5000

we have a×b= GCF ×LCM

SO, LCM =ab / GCF = 5000/50 = 100

2. LCM = 20, ab = 200

GCF = 200/20 = 10

3..

4. 1234= 2* 6 1 7

563 = 3* 1 13 1 = 3* 3*377

37 =37