Quantitative Aptitude - Arithmetic Ability Questions

If tan A = 1/2 and tan B = 1/3, then what is the value of tan (2A + B)?

If (x+1/x) = 5, then the value of 5xx2+5x+1?

Find the LCM of 0.63, 10.5, 2.1, 4.20

An aeroplane flying horizontally at a height of 3 Km. above the ground is observed at a certain point on earth to subtend an angle of 60°. After 15 sec flight, its angle of elevation is changed to 30°. The speed of the aeroplane (taking √3 = 1.732) is

If a+1b= b+1c = c+1a (a , b, c are not equal) then the value of abc = 

If sin3A = x, then value of x is

If x - y = 6 and xy = 40, then find x2 + y2 ?

Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 429, then what is the difference between the first and the third number?