Quantitative Aptitude - Arithmetic Ability Questions

If 11-13xx + 11-13yy + 11-13zz = 5 then what is the value of 1x + 1y + 1z = ?

If ab+ba = -1, then the value of a2b-b2a is

If  P2+1P2 = 47, then the value of P + 1P is

The price of rice has increased by 60%. In order to restore the original price, the new price must be reduced by

The bar chart given shows the sales of 3 types of cars in the Indian automotive industry over 4 years. All the sales figures have been shown in terms of 000 units.

If all the 3 categories increase by same rate in 2013 over 2012 as they did in 2012 over 2011, then what will be the total approximate sales (in ‘000 units) of all the 3 categories taken together in year 2013?

Roshan's current age is three years less than 1.5 times that of Usha's. 12 years ago Usha's age was three years more than half of Roshan's age. What is Roshan's present age in

A train is running at a speed of 116 kms/hr. The distance covered by the train in meters in 18 secs is

Determine the value of z in the equation: z = 20+20+20+20+...∞