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public ruby v1 · immutable#!/usr/bin/ruby#PROBLEM:#The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17.#Find the sum of all the primes below two million.#SOLUTION#Summing primes up to and with:n=2*10**6#Initializing. 2 is not recognized as prime using the method below and hence sum=2.number=2sum=2while number < n+1 do k=1 i=2 while i < Math.sqrt(number)+1 and k == 1 do k=0 if number % i == 0 end i= i+1 end sum = sum + k*number number = number+1endputs sum