Quantitative Aptitude - Arithmetic Ability Questions

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

What is the value of sin 330°?

ΔXYZ is right angled at Y. If m∠X = 30 deg, then find the value of (sinZ + √3).

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:5 and area of ΔABC is 98 cm sq, what is the area (in sq cm) of quadrilateral BDEC?

If x2 – 12x + 33 = 0, then what is the value of (x – 4)2 + [1/(x – 4)2]?

What is the third proportional to 10 and 25?

If (x - 13)2 + (y - 4)2 = 0, then the value of y + xy - x ?

Koushik can do a piece of work in X days and Krishnu can do the same work in Y days. If they work together, then they can do the work in