1.
How many lines can be drawn through two points?
Correct Answer
A. 1
Explanation
There can be only one line drawn through two points. Two distinct points determine a unique line in Euclidean geometry.
2.
Factors of 9 are…..
Correct Answer
D. None of these.
Explanation
The factors of 9 are the numbers that divide evenly into 9 without leaving a remainder. In this case, the factors of 9 are 1, 3, and 9. The options provided do not include all of these factors, so the correct answer is "None of these."
3.
When we multiply an exact number by zero, what will be the exact answer?
Correct Answer
C. Zero
Explanation
When we multiply any number by zero, the result will always be zero. This is because zero represents the absence of quantity or value, so when we multiply any number by zero, it essentially means that we have zero instances of that number. Therefore, the exact answer when multiplying an exact number by zero is always zero.
4.
How many digits answers will we get when we add 99 and 1?
Correct Answer
B. 3
Explanation
When we add 99 and 1, the sum is 100. The number 100 has three digits, which are 1, 0, and 0. Therefore, the correct answer is 3.
5.
What are 999 times 100.0?
Correct Answer
D. 99900
Explanation
The question is asking for the product of 999 and 100.0. To find the answer, we multiply these two numbers together. 999 times 100.0 equals 99900.
6.
1010 gram = ________kg.
Correct Answer
D. 1.01 kg.
Explanation
To convert grams to kilograms, we divide the given value by 1000. In this case, dividing 1010 grams by 1000 gives us 1.01 kilograms. Therefore, the correct answer is 1.01 kg.
7.
Simplify: {36 ÷ (-9)} ÷ {(-24) ÷ 6}
Correct Answer
A. 1
Explanation
The expression can be simplified by first dividing -9 by -24, which equals 1/2. Then, divide 36 by 1/2, which equals 72. Therefore, the answer is 1.
8.
Simplify: 0 × 10^{2}
Correct Answer
D. None of these.
Explanation
When you multiply any number by zero, the result is always zero. In this case, multiplying 0 by 102 will also result in zero. Therefore, the correct answer is "None of these" as none of the given options represent the correct result of the multiplication.
9.
Subtract - 8a from - 3a
Correct Answer
B. 5a
Explanation
When subtracting -8a from -3a, we can think of it as adding the opposite of -8a to -3a. The opposite of -8a is 8a. So, adding 8a to -3a gives us 5a. Therefore, the correct answer is 5a.
10.
The average of three person’s age is 9 years. Find the sum of their age.
Correct Answer
D. 27
Explanation
The average of three person's age is 9 years, which means that the sum of their ages is 9 multiplied by 3, which is 27.