Nokea
If a die is rolled, what is the probability of getting an odd number?
- A. 50%
- B. 75%
- C. 16.70%
- D. 33%
Correct Answer: A
Rationale: When a fair six-sided die is rolled, there are 3 odd numbers (1, 3, 5) out of a total of 6 possible outcomes (1, 2, 3, 4, 5, 6). The probability of rolling an odd number is calculated by taking the number of favorable outcomes (3) divided by the total number of outcomes (6), which simplifies to 3/6 or 1/2, equivalent to 50%. Therefore, the correct answer is 50%. This means that when rolling a fair six-sided die, there is a 50% chance of getting an odd number.
You may also like to solve these questions
What is the missing value in the ratio and proportion 15:2000::x:200?
- A. 1.5
- B. 7.777
- C. 0.15
- D. 15
Correct Answer: A
Rationale: To find the missing value x, we set up a proportion: 15/2000 = x/200. Cross multiplying, we get 15 * 200 = 2000x. Solving for x, x = (15 * 200) / 2000 = 1.5. Therefore, the correct answer is A, 1.5, which represents the missing value in the proportion. The ratio 15:2000 can be simplified to 3:400 by dividing both numbers by 5, making the proportion easier to work with. By setting up the proportion correctly and solving for x, we obtain the missing value as 1.5, which completes the proportion 15:2000::1.5:200.
How many milliliters are contained in 3 liters of fluid? (Enter numeric value only.)
- A. 300
- B. 3000
- C. 30,000
- D. 300,000
Correct Answer: B
Rationale: Correct Answer: B (3000)
Rationale:
1 liter = 1000 milliliters.
Therefore, 3 liters = 3 x 1000 = 3000 milliliters.
Choice B (3000) is correct because it correctly converts liters to milliliters.
Choice A (300) is incorrect as it is the equivalent of 0.3 liters.
Choice C (30,000) and D (300,000) are incorrect as they are the result of multiplying by 10 or 100 extra.
What is the result of the subtraction: 28.19 - 9 = ?
- A. 28.1
- B. 18.19
- C. 27.29
- D. 19.19
Correct Answer: D
Rationale: To find the result of 28.19 - 9, align the decimal points and subtract each place value accordingly. Subtracting 9 from 28.19 results in 19.19. In this calculation, when subtracting 9 from 19 in the tenths place, 1 remains in the tenths place. Subtracting 0 from 8 in the ones place gives 8. Therefore, the correct answer is 19.19. It's crucial to maintain the alignment of decimal points while performing arithmetic operations involving decimals to ensure accuracy.
What is the sum of the following numbers with all decimal places reported: 3.7 + 7.289 + 4 = ?
- A. 14.989
- B. 5.226
- C. 15
- D. 15.07
Correct Answer: A
Rationale: To find the sum, add the numbers together: 3.7 + 7.289 + 4 = 14.989. The correct answer is A, 14.989, as it accurately represents the sum of the given decimal numbers with all decimal places reported. Remember to sum up each digit correctly and include all decimal places in your final answer for accurate calculations. In this case, it is essential to maintain the precision of the decimal places provided for each number to ensure the accuracy of the final result. Adding the numbers correctly while considering the decimal places is crucial to obtaining the correct sum.
Round to the nearest whole number. Change the fraction to a percent: 9/13.
- A. 33%
- B. 69%
- C. 72%
- D. 78%
Correct Answer: B
Rationale: To convert a fraction to a percentage, you divide the numerator by the denominator, then multiply by 100. For the fraction 9/13, (9/13) * 100 = 69%. When rounded to the nearest whole number, 69% remains as 69%. Therefore, the correct answer is 69% (Choice B).