Quantitative Aptitude - Arithmetic Ability Questions

What is the reflection of the point (5, 2) in the line x = -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 ΔADE is 8 sq cm, what is the ratio of area of ΔADE: area of quadrilateral BDEC?

Find the value of '?, if the mean of the data set 18, 16, 22, 13, ? = 16.

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

cos(A+B) + cos(A-B) is equal to

The diagonals are not perpendicular in a _____.

Atul and Binay together complete a piece of work in 5 days. If Binay alone can complete the same work in 8 days, how many days Atul take to complete the same work alone?

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