Write the first five terms of each of the sequences in whose nth terms are:
an = n (n + 2)
The nth term of the sequence is given as an = n (n + 2)
The first five terms of the sequence will be given by substituting the value by n as 1, 2, 3, 4 and 5
The sequence so obtained now is
a1= 1(1 + 2) = 3
a2 = 2(2 + 2) = 8
a3 = 3(3 + 2) = 15
a4= 4(4 + 2) = 24
a5= 5(5 + 2) = 35
The required first five numbers of the sequence are 3, 8, 15, 24, 35