1. What do the following words have in common? 

CENT

USE

ZEN

 

2. The first three clues below have something in common that is hinted at the the fourth clue. Can you determine what it is?

 

NERVOUS SYSTEM

SURPLUS STORE 

MOBIUS STRIP 

It served in Viet Nam

 

HINT:

1. The same two letters will change each word to new one.

 

Answers:

 

1. Each word can be preceded by DO to make a new word:

 

DOCENT

DOUSE

DOZEN

 

2. The letter USS are exactly in the middle of each clue - leading to USS Midway - an aircraft carrier that was deployed in the Gulf of Tonkin in the Viet Nam War:

 

nervoUS System

surplUS Store     

mobiUS Strip  

 

Credit:

2: Luke Schreiber