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According to Howard Gardner's Multiple Intelligence theory, Albert Einstein had a Logical-Mathematical intelligence.
There is multiple answers! It depends on how many students there are.
15 or any multiple of 15, including 15 trillion which is greater than the human popluation, but that is maths for you!
As the students can be split into 2, 3 or 5 groups with no students left over, the number of students in the classroom must be divisible by 2, 3 and 5.Hint: Find a number which is a multiple of 2, 3 and 5.The easiest way to find a multiple of any numbers is to just multiply them together:2 x 3 x 5 = 30.Other possible multiples of 2, 3 and 5 would include all multiples of this, namely 60, 90, 120, etc.As it would be a classroom containing students, the most likely number would be the smallest multiple, namely 30.Unpacking the maths behind this question, it is effectively asking:What is the Lowest Common Multiple of 2, 3 and 5?Which is, for example, an important consideration when adding or subtracting fractions - by using the Lowest common multiple it avoids the number getting too big and difficult to manage.