Quantitative Aptitude - Arithmetic Ability Questions

What is the value of cos (90 – B) sin (C – A) + sin (90 + A) cos (B + C) – sin (90 – C) cos (A + B)?

√(cosec2 -­ 1)/cosecA is equal to?

Vikash purchased 5 bananas for Rs.4 and sold 4 bananas for Rs.5. Calculate his % profit?

Of the three numbers, the average of the first number and the second number is 37 more than the average of second number and third number. What is the difference between the first and the third number?

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

Dodecahedron has 20 vertices. How many edges does it have?

Find out the odd word/letters/number/number pair from the given alternatives.

What is the highest common factor of 360 and 450?