A teacher wanted certain groups of students with exactly 10 or 12 or 15 members. What minimum number of students must be there in the class to make the required groups?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 60.
The minimum number of students required to make a group of 10, 12, 15 students = LCM of 10,12 and 15
Factors of 10 = 2 × 5
Factors of 12 = 2 × 2 × 3
Factors of 15 = 3 × 5
LCM = 2 × 2 × 3 × 5 = 60