Question

find the sum of all even natural numbers lying between 5 and 100​

Answer 1

2444 is the sum of all even numbers lying between 5 and 100

Answer 2

Even no. b/w 5 and 100 are 6,8,10............98
since it is in Ap(Arithmetic Progression) with common difference 2.
No. of terms= (98-6÷2)+1 = 42 .
Sum = 42÷2(6+98)= 21(104)= 2184..