For the next test, one of the students got 100 but the remaining 4 still got 50. what was the average grade in the class now?

60

Step-by-step explanation:

50x4+100=300 total score

300/5 (total score divided by number of students) = 60

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

step-by-step explanation:

it will be a cylinder. with a diameter of 8 and 4 single pieces high