Seven friends spent Rs 14 each on a project and the eighth friend spent Rs 21 more than the average expenditure of all eight of them. What is the amount of total money (in Rs) spent by them?

$$\frac{(x^{2}-5x+6)}{(x^{2}-3x+2)}\div\frac{(x^{2}-7x+12)}{(x^{2}-5x+4)}?$$

In the given figure, AP = 3 cm, AR = 6 cm and RS = 9 cm, then what is the value (in cm) of PQ? 

                                     2017( rice yield in lakh kgs)

Africa :                          80   

Brazil:                            110

China:                           250

 India:                            200 

Bangladesh:                 150 

Sri lanka:                      140                           

Writing the rice yields of all countries in ascending order, the difference between the sum of yields of first three countries to that of last three countries is

If sec 15θ = cosec 15θ (0° < θ < 10°) then value of θ is