LCM Calculation Quiz

What method does the instructor suggest for finding the LCM of three numbers?

• Prime factorization

• Using a graph

• Using a calculator

• Listing all multiples

What are the prime factors of 81?

• 1 and 81

• 3, 3, 3, and 3

• 9 and 9

• 3 and 9

Which rule of divisibility helps in determining that 231 is divisible by 3?

• The number is even

• The number is a multiple of 10

• The number ends in 3

• The sum of the digits is divisible by 3

What is the first step in finding the prime factors of 3,465?

• Divide by 7

• Divide by 3

• Divide by 2

• Divide by 5

What is the LCM of the numbers discussed in the video?

• 31,185

• 3,465

• 231

• 81