Quantitative Aptitude - Arithmetic Ability Questions

If x = 1 – y and x2 = 2 – y2, then what is the value of xy?

If 5+x+5-x5+x-5-x = 3,then what is the value of x ?

A cone of radius 3.5 cm and height 27 cm is completely filled with water. This water is emptied into an empty cylindrical vessel of radius 2.1 cm. What will be the height of water in this vessel? (Take π = 22/7)

If 10x/3 + 5/2(2 - x/3) = 7/2, then the value of x is?

If x + y = 13 and x2 + y2 = 89, then find xy is

In ΔABC, ∠B = 70° and ∠C = 60°. The internal bisectors of the two smallest angles of ΔABC meet at O. The angle so formed at O is

Solve : 8,23,199.98 × 99.92 = ? × 80,000

In the given figure, ∠QRN = 40°, ∠PQR = 46° and MN is a tangent at R. What is the value (in deg) of x, y and z respectively?