Quantitative Aptitude - Arithmetic Ability Questions

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

A wholesaler sells a watch to a retailer at a gain of 20% and the retailer sells it to a customer at a loss of 10%. If the customer pays Rs 874.8, what had it cost the wholesaler?

A line passing through the origin perpendicularly cuts the line 2x + 3y = 6 at point M. Find M?

Select the odd word/letters/number/number pair from the given alternatives.

If a1-2a+b1-2b+c1-2c = 12, then 11-2a+11-2b+11-2c value is

In an army selection process, the ratio of selected to unselected was 6:1. If 90 less had applied and 30 less selected, the ratio of selected to unselected would have been 8:1. How many candidates had applied for the process?

If √(1 + cot2A)/cotA = x, then the value of x is

2*[­0.3(1.3 + 3.7)] of 0.8 = ?