The value of tan 4∘.tan 43∘.tan 47∘.tan 86∘ is?
Solve the equation for x : 6x - 27 + 3x = 4 + 9 - x
If a - b = 1 and a^2 + b^2 = 25, find the value of a + b.
What are the last three digits of the product of 12345 and 54321?
1200 kg of wheat is enough for 280 men for 36 days. How long will 1500 kg of wheat last for 210 men?
In a shower, 5 cm of rain falls. The volume of water that falls on 1.5 hectares of ground is:
If the average marks of three classes of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students are:
A train 750 m long travels at 82 km/h. A person is walking in the opposite direction at 8 km/h. How long does it take for the train to pass the person (in seconds)?
An aircraft was slowed down due to bad weather during a 600 km flight. Its average speed was reduced by 200 km/hr, and the flight time increased by 30 minutes. What is the duration of the flight?
A rectangular field is 100 m long and 48 m wide. Two paths run through the middle, and the rest of the field is used for agriculture. If the area of the agricultural part is 4365 sq. m, what is the width of the paths?