A student of 5th standard writing down the counting numbers as 1,2,3,4,... and then he added all those numbers and got the result 500. But when I checked the result I have found that he had missed a number. What is the missing number?
The correct option is D 28
Find the sum of n natural numbers which is greater than 500. So if we consider that he had to add 32 natural numbers then the ideal answer would have been 528. It means he had missed 28 during the process.