Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd number from the given alternatives.

If(x + y)2 = xy + 1 and x3 – y3 = 1, then what is the value of x – y?

A can do a work in 12 days while B can do it in 15 days. They undertake to complete it together for Rs. 450. what will be the share of A in this amount of money ?

A train is moving at the speed of 90 km/hr. How many seconds it will take to cover a distance of 2275 meter?

O is the orthocentre of∆ABC, and if ∠BOC = 110° then ∠BAC will be

Robin can do a work in 10 hours. Pradeep and Robin together can do the same work in 4 hours. Pradeep and Nitin together can do the samework in 5 hours. In how many hours Nitin alone can complete the same work?

A and B together can complete a work in 24 days. B alone does 1/3rd part ofthis work in 12 days. How many days will A alone take to complete the remaining work?

The ratio of present ages of Rasika and Shami is 7:5. After 17 years the ratio of their ages will be 12:11. What is Rasika's present age?