What is the union of the two sets a=(1,5,8,12,17} and b={5,17}? a) {1,5,17} b) {1,5,8,12,17} c) {5,27} d) {17}

(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

the expected value of the random variable : 0, 1 and 2

step-by-step explanation: