Tag: series

Interview Questions

• Sum 5 + 10 + 20 + … + 640 fast
• Add all the powers of two up to 512
• Sum the infinite series 9 + 3 + 1 + …
• Sum a tripling series 2 + 6 + 18 + … + 486
• Sum 3 + 6 + 12 + … + 384 at a glance
• Sum the integers from 1 to 200
• Sum the integers from 50 to 100
• Sum the integers from 1 to 1000
• Sum an arithmetic series with step 4
• Sum the integers from 1 to 100