3x≡4(mod5)3x ≡ 4(mod 5)3x≡4(mod5). Find the least value of x
1
2
3
4
The interquartile range of a distribution is 7. If the 25th percentile is 16, find the upper quartile.
35
30
23
9
Two buses start at the same station from 9.00 a.m. and travel in opposite directions along the same straight road. The first bus travels at a speed of 72 km/h and the second at 48 km/h. At what time will they be 240 km apart?
1:00 pm
12:00 noon
11:00 am
10:00 am
A student measures a piece of rope and found that it was 1.26m long. If the actual length of the rope was 1.25m, what was the percentage error in the measurement.
0.40%
0.01%
0.25%
0.80%
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