If you flip it around you get 24, 2+4 is 6. World War 2 lasted 6 years what happened at the end of World War 2 an uneasy treaty was signed making peace between the Soviet Union and the United States starting the Cold War what happened 20 years into the Cold War? The Cuban Missile Crisis who was President during the Cuban Missile Crisis? John F Kennedy, how old was John F Kennedy when he took office? 42 years old. What happens if the Soviets fire the missiles? Nuclear War. What happens during Nuclear War? Nuclear Winter. What happens during Nuclear Winter? Human Extinction. What happens during human extinction? No Life. So that's what 42 has to do with Life. Thank You.