Number Series (medium)

Question: Which is the missing number in the below Number Series? 2, 3, 5, 7, 11, 13, ?, 19


Question: How is 2+2 four, 3+3 eight, and 7+7 triangle?

Question: Can you find the missing number in the below series? 43, 8, 38, 9, 34, 11, _, 14

Two Heads (medium)

Question: You come to a cross road and see a man with two heads. A sign tells you that one head always tells the truth and the other one always lies. The sign also tells you that one road leads to life and posterity while the other leads to certain death. Now the hard part. You can only ask ONE head ONE question. What do you ask? Which road do you take? Hint: One head knows what the other will tell you.

Question: What did the hang glider say about autumn rock climbing?