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I took that test about 8 years ago. It was about 100-120 general questions. Some were math but most of them were basic pipefitting knowledge....take-offs, valve assembly, drawings, etc. It was a pretty tough test. The place where I took it said that only about 30 % of the peolple passed and the avg score was like 50 or something. I was fresh out of the union apprenticeship school so I made an 87.