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Sum of the first 15 Even Numbers
Sum of the First
<-- Enter n
Calculate the sum of the first 15 Even Numbers
Σ n Even Numbers formula:
S
_{15}
= n(n + 1)
S
_{15}
= 15(15 + 1)
S
_{15}
= 15(16)
S
_{15}
=
240
Display the first 15 Even Numbers where E
_{n}
denotes the n
^{th}
number
n
E
_{n}
1
2
2
4
3
6
4
8
5
10
6
12
7
14
8
16
9
18
10
20
11
22
12
24
13
26
14
28
15
30