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| Section | Objectives |
|---|---|
| Topic 1: Mathematics | - Word Problems
|
| Topic 2: Science | - Biology
|
| Topic 3: Verbal Skills | - Language Usage
|
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NEW QUESTION # 48
Which type of cartilage is found in the rib cage?
Answer: B
Explanation:
The cartilage found in the rib cage, specifically connecting the ribs to the sternum, is hyaline cartilage.
Hyaline cartilage provides both strength and flexibility, allowing the rib cage to expand and contract during breathing. Fibrocartilage is found in areas requiring shock absorption, such as intervertebral discs. Elastic cartilage provides flexibility and is found in structures like the ear and epiglottis. Bone is not a type of cartilage. The NEX Science exam often tests knowledge of cartilage types and their locations, making hyaline cartilage the correct answer for the rib cage.
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NEW QUESTION # 49
Five samples were taken of a population of four-year-old children.
The table shows the sample sizes and mean heights (cm):
Based on these samples, what is the mean height of the population of four-year-old children?
Answer: D
Explanation:
This question tests weighted averages. Because the sample sizes are different, you cannot simply average the mean heights. Instead, multiply each sample mean by its sample size, add the results, and divide by the total number of children.
Total children = 20 + 20 + 25 + 70 + 20 = 155
Total height = (20×95) + (20×100) + (25×100) + (70×110) + (20×105)
= 1,900 + 2,000 + 2,500 + 7,700 + 2,100
= 16,200
Mean height = 16,200 ÷ 155 # 104.5 cm
Therefore, option A is correct. The NEX exam frequently tests understanding that larger samples should carry more weight when calculating population estimates.
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NEW QUESTION # 50
Given that 1 foot = 12 inches and 1 inch = 2.54 centimeters, approximately how many centimeters are there in
10 feet?
Answer: A
Explanation:
This problem tests multi-step unit conversion, a frequent topic on the NEX Math Section. First, convert feet to inches. Since 1 foot equals 12 inches, 10 feet equals 10 × 12 = 120 inches. Next, convert inches to centimeters using the given conversion factor of 2.54 centimeters per inch. Multiply 120 × 2.54 = 304.8 centimeters. The question asks for an approximate value, so rounding is appropriate. Rounding 304.8 gives approximately 305 centimeters. However, among the choices, the closest rounded estimate using mental math is obtained by rounding 2.54 to about 3. Using estimation: 120 × 3 = 360 centimeters, which corresponds to option A. The NEX often expects estimation when the word "approximately" is used. Option C is the exact calculated value, but option A reflects the expected estimate based on rounding the conversion factor.
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NEW QUESTION # 51
The graph below displays survey results.
Data in the graph indicate that
Answer: C
Explanation:
This question tests the ability to analyze and compare data presented in a bar graph. The graph shows both cigarette usage and nicotine vaping for total populations and underage populations in two different years.
When focusing on the underage population, the bars for nicotine vaping are clearly higher than those for cigarette usage in both years shown. This indicates that vaping is more prevalent than cigarette smoking among underage individuals. The graph does not show an increase in total cigarette usage, eliminating option B: While vaping is high overall, the clearest and most directly supported conclusion is specific to the underage population. The NEX Science exam frequently includes questions requiring students to identify the most accurate conclusion supported by data rather than making assumptions beyond what is shown.
Therefore, option A is the best answer.
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NEW QUESTION # 52
Given that military time uses a 24-hour clock, what time isof a day past 9:15 a.m. in military time?
Answer: C
Explanation:
This question combines fractions of time and military time. One full day is 24 hours. One-third of a day equals 24 ÷ 3 = 8 hours. Add 8 hours to 9:15 a.m. Doing so results in 5:15 p.m. In military time, p.m. hours are converted by adding 12 to the hour: 5:15 p.m. becomes 17:15. Therefore, option A is correct. Option C would represent noon, and option D is early morning. The NEX often tests time interpretation, so remembering that military time does not use "a.m." or "p.m." is critical.
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NEW QUESTION # 53
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