I only know (b) and 28 (c) (b) Multiples of 120= 120,240,360,480,600 Multiples of 150= 150,300,450,600 Both numbers have 600 as their first common multiple so the ANSWER is 600 28. (a) Common factors of 24= 1,2,3,4,6,8,12,24 Common factors of 64= 1,2,4,8,16,32,64 8 is the only common factor for both 24 and 64 so 8 is the ANSWER
The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
