Quantitative Aptitude - Arithmetic Ability Questions

If tan(A/2) = x, then the value of x is

R and S started a business by investing Rs 165000 and Rs 195000 respectively for the same period of time. If R’s share in the profit earned by them is Rs 11000, then what is the total profit (in Rs) earned by both of them together?

Three pipe P, Q and R can fill a tank in 12 minutes, 18 minutesand 24 minutes respectively. The pipe R is closed 12 minutesbefore the tank is filled. In what time the tank is full?

In ΔABC, AC = BC and ∠ABC = 50°, the side BC is produced to D so that BC = CD then the value of ∠BAD is

 In the following question, select the odd letter/letters from the given alternatives.

ΔDEF is right angled at E. If secD = 25/7, then what is the value of cosecF ?

If (cotA - cosecA)2 = x, then the value of x is

Four pairs of words are given. Find the odd one out.