Free GRE Prep Hour: Divisibility Connections: Primes, GCF, & LCM

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In this session, GRE instructor Tyler Johnson guides you through GRE content drawing from the 5 lb. Book of GRE Practice Problems. Prime factors can be described as the "building blocks" of integers. In this lesson, discover the connections between prime factors, total factors, greatest common factors (GCF), & least common multiples (LCM).

1:15 Question 1
5:26 Using a factor table
7:33 Question 2
10:49 Using a prime factor tree
12:36 Question 3
15:58 Question 4
25:28 Question 5
31:04 GCF & LCM
33:30 Question 6
39:40 Question 7
46:00 Counting positive factors
48:30 Question 8
53:03 Question 9
1:00:10 Question 10
1:05:31 Takeaways

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