Explanation: The correct answer is 22. This is a test of pattern recognition and logical problem solving ability. With each new number, a sum is added to the previous term that increases by 1 with each term (1+0=1, 1+1=2, 2+2=4, 4+3=7, 7+4=11, 11+5=16, 16+6=22). If you didn't get the correct answer, don't fret. Many employers look for mechanics with strong analytical and problem-solving skills, which is why it's important to develop your skills of diagnosis and analysis.