Amazon.com description: Product Description: Young men and women who enter any branch of the United States Armed Forces (as well as current service members who want to raise their scores) must take the Armed Services Vocational Aptitude Battery (ASVAB), which determines their qualifications for military service and aptitudes for specialized training. This set of flash cards prepares aspiring recruits with questions that cover all 9 ASVAB subtests, including word knowledge, paragraph comprehension, general science, electronics, shop and automotive information, mechanical comprehension, mathematics knowledge, and mentally assembling rotated objects. Questions are on the front and answers are on the reverse side of each flash card. The cards, which measure 4 1/2" x 2 3/4", each have a punch hole in one corner that accommodates an enclosed metal key-ring-style card holder. The ring allows users to arrange the cards in any sequence that suits their study needs. This set of 400 cards can be used alone or in tandem with Barron's ASVAB test preparation manual.