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A ladder which is 20 ft long is placed on a wall such that the top of ..
A ladder which is 20 ft long is placed on a wall such that the top of the ladder touches the top of the wall. The bottom of the ladder is 12 ft away from the wall. What is the height of the wall? => 19 ft or 13 ft or 16 ft or 22 ft..
A pole 20 m high is fixed on the top of a tower. The angle of elevatio..
A pole 20 m high is fixed on the top of a tower. The angle of elevation of the top of the pole as observed from a point P on the ground is 65°. The angle of depression of the point P from the top of the tower is 60°. What is the height of the tower? =..
Use the tally chart to count. How many tallies are there for yellow co..
Use the tally chart to count. How many tallies are there for yellow color? => 15 or 27 or 12 or 20..
Use the tally chart to answer the question. How many fewer tomatoes th..
Use the tally chart to answer the question. How many fewer tomatoes than carrots? => 7 or 33 or 13 or 20..
Mr. Tan spends 20% of his annual income on rent, 35% on food, 30% on h..
Mr. Tan spends 20% of his annual income on rent, 35% on food, 30% on his children′s education and 15% on savings. Identify the pie chart that represents the data correctly. => Graph 3 or Graph 4 or Graph 2 or Graph 1..
The angle of elevation of the top of a hill from the foot of a tower i..
The angle of elevation of the top of a hill from the foot of a tower is 35° and the angle of elevation of the top of the tower from the foot of the hill is 20°. If the distance between the foot of the tower and the foot of the hill is 75 ft, then find the heigh..
To qualify in a competitive examination, candidates must score in the ..
To qualify in a competitive examination, candidates must score in the top 5% in the examination. The test has a mean of 200 and a standard deviation of 20. What is the lowest possible score to qualify? Assume the test scores are normally distributed. => 202.6 or 200 or 232.9 or ..
To qualify as a contestant in a swimming event, a swimmer has to be in..
To qualify as a contestant in a swimming event, a swimmer has to be in the top 20% of all entrants. The swimming times are normally distributed, with a mean of 70 min and a standard deviation of 3 min. What is the qualifying time for the event to the nearest minute? => 66.4 min ..
The angle of elevation from the ground to the top of a tower is 70°..
The angle of elevation from the ground to the top of a tower is 70° as shown in the figure. Find the missing angle. => 20° or 70° or 35° or 40°..
The number of computers of different companies sold in a day is repres..
The number of computers of different companies sold in a day is represented in the following pie chart. Find the average number of computers sold by the companies. => 10 or 20 or 15 or 25..
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