Sum of primes!

Number Theory Level 2

So easy!!!

What is the sum of all primes between 1-100?

You can try My Other Problems .

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Astro Enthusiast by Astro Enthusiast , 24, Philippines

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5 solutions

Subodh Hegde
Aug 10, 2014

2+3+5+7+11+13+17+19+23+29+31+37+41+43+47+53+59+61+67+71+ 73+79+83+89+97 =1060

3 Helpful 0 Interesting 0 Brilliant 0 Confused
. .
Apr 28, 2021

Just see the capture.

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Antonio Rangel
Nov 17, 2014

3+13+23+43+53+73+83=291

7+17+37+47+67+97=272

11+31+41+61+71=215

19+29+59+79+89=275

2+5=7

291+272+215+275+7=1060

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Abhijith Asokan
Sep 12, 2014

C++ solution

include<iostream.h>

void main() { int n=2,sum=0,i; while(n<100) { for(i=2;i<n;i++) if(n%i==0) break; if(!(i<n)) sum+=n; n++; } cout<<"sum="<<sum; }

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Nikhil Tandon
Aug 16, 2014

cout<<2+3+5+7+11+13+17+19+23+29+31+37+41+43+47+53+59+61+67+71+ 73+79+83+89+97 :D

0 Helpful 0 Interesting 0 Brilliant 0 Confused

isn't there a easier way

Shivanshu Deorani - 6 years, 9 months ago

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