The average of 19 numbers is 48. The average of the first 7 numbers is 50.6 and that of the last 13 numbers is 47.6. If the 7th number is excluded, then what is the average of the remaining numbers (correct to one decimal place)?
Study the following bar graph and answer the question given below.
The bar graph represents the total number of applications received for B.Sc. Mathematics by two different colleges A and B in 5 different years.
Find the difference between the average number of applications received by college A from 2014 to 2018 and the average number of applications received by college B from 2014 to 2018?
As observed from the top of a lighthouse, 42 m high above sea-level, the angle of depression of a ship sailing directly towards it changes from 30° to 45°. The distance travelled by the ship during the period of observation is:
\(42(1 - \sqrt{3})\)
\(42(\sqrt{3} + 1)\)
\(42(\sqrt{3} - 1)\)
42
What is the cost (in ₹) of levelling a triangular park with sides 60 m, 112 m and 164 m at the rate of ₹10.50 per m²?