Answer:
the first five terms are
a1 = 6
a2 = 24
a3 = 60
a4 = 120
a5 = 210
Step-by-step explanation:
the experission used to find the five terms is
an = n3+ 3n2+ 2n
There are 120 different possible groups.
(10 * 9 * 8)/(3 * 2 * 1) + 120
Answer:
c on edge
Step-by-step explanation:
Answer:A
Step-by-step explanation: the diagonals face each other making them perpendicular making both sides parallel to each other, being straight.
