Nokea
12 is a/an:
- A. even number
- B. odd number
- C. prime number
- D. composite number
Correct Answer: A
Rationale: Rationale:
- An even number is an integer that is exactly divisible by 2, meaning there is no remainder when divided by 2.
- The number 12 can be divided by 2 evenly, as 12 · 2 = 6, with no remainder.
- Therefore, 12 is classified as an even number.
You may also like to solve these questions
Ratio and proportion 1.2:x=14:42.
- A. 2
- C. 1
- D. 3
Correct Answer: D
Rationale: Cross-multiply to solve for
x
x:
1.2
42
=
14
x
1.242=14x
50.4
=
14
x
50.4=14x
x
=
50.4
14
=
3.6
x=
14
50.4
​
=3.6
Change the following fraction into a ratio: 19/40
- A. 19:40
- B. 40:19
- C. 19:4
- D. 40:4
Correct Answer: A
Rationale: To change a fraction into a ratio, you replace the fraction bar (/) with a colon (:). Therefore, 19/40 as a ratio is written as 19:40. Choice B (40:19) is incorrect as it reverses the order of the numbers. Choice C (19:4) is incorrect as it uses the denominator as the second number, which is not the correct way to represent a ratio. Choice D (40:4) is incorrect as it does not reflect the original fraction accurately.
5 1\3 + 3 1\2.
- A. 8 5/6
- B. 9
- C. 7
- D. 8
Correct Answer: A
Rationale: 5 1\3 + 3 1\2 equals 8 5\6.
A farmer's production statistics find that it takes 2 chickens to produce 6 eggs in 24 hours. How many chickens will be needed to produce 24 eggs in 24 hours?
- A. 12 chickens
- B. 4 chickens
- C. 3 chickens
- D. 8 chickens
Correct Answer: D
Rationale: First, find how many eggs 1 chicken can produce in 24 hours. If 2 chickens produce 6 eggs: 6 eggs / 2 chickens = 3 eggs per chicken. To produce 24 eggs, we divide the required number of eggs by the production rate per chicken: 24 eggs / 3 eggs per chicken = 8 chickens. Therefore, the correct answer is D. 8 chickens. Choice A, 12 chickens, is incorrect because it does not consider the production rate per chicken. Choice B, 4 chickens, is incorrect as it does not account for the number of eggs needed. Choice C, 3 chickens, is incorrect because it miscalculates the production rate per chicken.
A doctor prescribes 150 milligrams of medication to be taken orally every 12 hours. How many grams should the patient take per dose?
- A. 0.015 grams
- B. 0.15 grams
- C. 1.5 grams
- D. 15 grams
Correct Answer: B
Rationale: Rationale: 1. Convert milligrams to grams: 150 milligrams = 150/1000 = 0.15 grams. Therefore, the patient should take 0.15 grams per dose. Choice A (0.015 grams) is incorrect as the decimal point was misplaced, leading to a value that is too small. Choice C (1.5 grams) is incorrect as it represents 10 times the correct value. Choice D (15 grams) is incorrect as it represents 100 times the correct value. The correct conversion from milligrams to grams is 0.15 grams.