Quantitative Aptitude - Arithmetic Ability Questions

What is the simplified value of sin2(90–θ)–[sin(90–θ)sinθ/tanθ]?

The average of 44 consecutive odd numbers is 144.What is the largest number?

If the price of onion increases from Rs 24/kg to Rs 36/kg, then by what percentage a household should decrease the consumption of onion so that
expenditure remains same?

If sum of the areas of the circumcircle and the incircle of an equilateral triangle is 770 cm2, then what is the area (in cm2) of the triangle?

If a - b = 10 and ab =-21, then what is the value of a3-b3 ?

If ab = 21 and a+b2a-b2 = 254,then the value of a2+b2+3ab

Raman can do a work in 5 days, Jatin can do the same work in 7 days and Sachin can do the same work in 9 days. If they do the same work together and they are paid Rs 2860, then what is the share (in Rs) of Raman?

The marked price of an article is 10/7 of the cost price and the selling price of that article is 4/5 of the marked price. What is the profit percentage?