Virtual Quiz Bee Elimination

1. Which of the following is a whole number but not a counting number?

• -1

• 0

• 1

• 2

2. Given: Set M is the set of secondary colors, which of the following illustrates the set?

• M = {red, yellow, blue}

• M = {orange, green, violet}

• M = red, yellow, blue

• M = orange, green, violet

3. What is the absolute value of -2?

• -2

• 0

• 2

• can't be determined

4. What number is called the identity element for multiplication?

• 0

• 1

• 2

• 3

It is the set that contains counting numbers.

• Whole number

• Integer

• Natural number

• Rational number

6. Which number should -5 be added to get 0?

• -5

• 0

• 5

• can't be determined

7. Simplify:

 $\sqrt{4}\ +\ \sqrt{9}$  

• 4

• 5

• 9

• 13

8. What is the decimal form of

 $\frac{2}{5}$  ?

• 0.2

• 0.3

• 0.4

• 0.5

9. Maya has 45 marbles, she gave 2/3 of it to her brother, then she gave 2/3 of the remaining marbles to her younger sister. How many marbles were left?

• 30

• 10

• 5

• 0

10. The diameter of SARS-COV-2 also known as COVID19 is said to range between 60 nanometers (nm) to a maximum of 140 nanometers (nm). 60 nanometers is equivalent to

 $\frac{6}{100\ 000}$  millimeters, convert the given in millimeters unit  into a scientific notation form.

•  $6\ x\ 10^{-5}\ mm$  

•  $6\ x\ 10^{-6}\ mm$  

•  $5\ x\ 10^6\ mm$  

•  $5\ x\ 10^{-5\ }mm$