A stick of length 1.75m was measured by a boy as 1.80m. Find the percentage error in his measurement
27/9%
26/7%
5%
277/9%
284/7%.
Correct answer is B
Convert 89\(_{10}\) to a number in base two.
1101001
1011001
1001101
101101
11001
Correct answer is B
\(89_{10}\)
| 2 | 89 |
| 2 | 44 r 1 |
| 2 | 22 r 0 |
| 2 | 11 r 0 |
| 2 | 5 r 1 |
| 2 | 2 r 1 |
| 2 | 1 r 0 |
| 0 r 1 |
\(89_{10} = 1011001_{2}\)
Solve the inequality: 3m + 3 > 9
m > 2
m > 3
m>4
m>6
m>12
Correct answer is A
3m + 3 > 9
3m > 9 - 3
3m > 6
m > 2
Simplify: \(\frac{3}{4} \div 1\frac{1}{4} \times (1\frac{1}{2} - \frac{2}{3})\)
7/30
7/24
9/25
1/2
18/25
Correct answer is D
\(\frac{3}{4} \div 1\frac{1}{4} \times (1\frac{1}{2} - \frac{2}{3})\)
\(\frac{3}{4} \div \frac{5}{4} \times (\frac{9 - 4}{6})\)
= \(\frac{3}{4} \times \frac{4}{5} \times \frac{5}{6}\)
= \(\frac{1}{2}\)
S = {1, 2, 3, 4, 5, 6}, T = {2,4,5,7} and R = {1,4, 5}, and (S∩T) ∪ R
{1, 4, 5}
{2, 4, 5}
{1, 2, 4, 5}
{2, 3, 4, 5}
{1, 2, 3, 4, 5}
Correct answer is C
S = {1, 2, 3, 4, 5, 6}; T = {2, 4, 5, 7}; R = {1, 4, 5}
(S∩T) ∪ R = {2, 4, 5} ∪ {1, 4, 5}
= {1, 2, 4, 5}