Multiple choice

What is the result obtained when the least common multiple of 11 and 10 is added to the least common multiple of 12 and 10?

  1. 160

  2. 165

  3. 170

  4. 210

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Multiples of 11 = 11, 22, 33, 44, 55, 66, 77, 88, 99, 110 Multiples of 10 = 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110 Least common multiple = 110 Multiples of 12 = 12, 24, 36, 48, 60 Least common multiple of 12 and 10 = 60 110 + 60 = 170