Question

what is the sum of all even natural numbers from 1 to 100​

Answer 1

Answer:

the answer is 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92 94,96 98,100

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Answer 2

Answer:

Sum of all natural even numbers (Excluding 100) is 2450

Step-by-step explanation:

The series of even natural number is 2 + 4 +  6 + ... + 94 + 96 + 98

The above series is Arithmetic.

$Sn=\frac{n}{2} [a+l]$

where a = first element = 2

l = last element = 98

n = number of elements:

l = a + (n - 1)d

98 = 2 + 2n - 2

2n = 98

n = 49

$Sn = \frac{49}{2} [2 + 98]\\Sn = \frac{49}{2}[100]\\ Sn = 49(50)\\Sn = 2450$