| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.71 |
| Score | 0% | 74% |
What is the least common multiple of 5 and 7?
| 9 | |
| 30 | |
| 17 | |
| 35 |
The first few multiples of 5 are [5, 10, 15, 20, 25, 30, 35, 40, 45, 50] and the first few multiples of 7 are [7, 14, 21, 28, 35, 42, 49, 56, 63, 70]. The first few multiples they share are [35, 70] making 35 the smallest multiple 5 and 7 have in common.
What is (z2)5?
| z7 | |
| 5z2 | |
| z10 | |
| 2z5 |
To raise a term with an exponent to another exponent, retain the base and multiply the exponents:
(z2)5Find the average of the following numbers: 9, 5, 8, 6.
| 3 | |
| 12 | |
| 4 | |
| 7 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{9 + 5 + 8 + 6}{4} \) = \( \frac{28}{4} \) = 7
What is \( \frac{3}{6} \) ÷ \( \frac{1}{6} \)?
| \(\frac{3}{32}\) | |
| \(\frac{1}{54}\) | |
| 3 | |
| \(\frac{1}{10}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{3}{6} \) ÷ \( \frac{1}{6} \) = \( \frac{3}{6} \) x \( \frac{6}{1} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{3}{6} \) x \( \frac{6}{1} \) = \( \frac{3 x 6}{6 x 1} \) = \( \frac{18}{6} \) = 3
Which of the following is not an integer?
-1 |
|
1 |
|
\({1 \over 2}\) |
|
0 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.