- #1
shina
- 21
- 0
Homework Statement
Homework Equations
The Attempt at a Solution
hey hello every one I want to ask a question that is add 1+2+3+4.....10000000. I think its very easy. for example let us add first 5 numbers 1+2+3+4+5 now we can find a pattern that adding first and last digit will be always same. for example 5+1=4+2 and similarly but it is a odd number that we can Ind easily by simple maths. so here we can multiply 6(addition of first and last number)×2(number of pairs) +3 because it is odd number