Questions

(1132 + 1152 + 1172 - 113 x 115 - 115 x 117 - 117 x 113) is equal to

A boat is sailing towards a lighthouse of height 20√3 m at a certain speed. The angle of elevation of the top of the lighthouse changes from 30° to 60° in 10 seconds. What is the time taken (in seconds) by the boat to reach the lighthouse from its initial position?

Haemoglobin has the highest affinity with which of the following?

Which of the following trees shed their leaves once in a year?

The second most senior office in the country is of _____ .

A Sonar of a ship sends sounds waves of speed 1000 m/s. These waves are reflected back by the ocean floor in 2 seconds. Find the depth (in m) of theocean floor. 

A car accelerates uniformly from 18 kmph to 72 kmph in 5 s. The acceleration of the car (in m/sq.s) is:

Instrument for measuring blueness of the sky or ocean is called ___________.