16, 25, 36, 72, 144, 196, 225

If  tan(4θ−50∘)=cot(50∘−θ), then the value of θ is? 

 How many times do the hands of a clock coincide in a day? 

For the equation, 5A9 – 7B2 + 9C6 = 823, the maximum value of B should be _____.

Find the area of a trapezium whose parallel sides are 20 cm and 18 cm long, and the distance between them is 15 cm.

A train 250 m long travels at 30 km/h. How long does it take the train to cross a person cycling at 10 km/h in the opposite direction?

  A and B can finish a piece of work in 30 days, B and C can finish it in 15 days, C and A in 10 days. Time taken by them together to do this work is?
 

Some quantity of water is taken out from a bucket that has 12 liters of water. If the remaining water is 6 liters less than the water taken out, then the quantity of water taken out is:

In a certain code language:

 'Tom Kun Sud' means 'Dogs are barking';

 'Kun Jo Mop' means 'Dogs and horses'; and

 'Mut Tom Ko' means 'Donkeys are mad'.

Which word in that language means 'barking'?

The ratio between the present ages of P and Q is 5:7 respectively. If the difference between Q's present age and P's age after 6 years is 2, what is the total of P's and Q's present ages?