Quantitative Aptitude - Arithmetic Ability Questions

$$\begin{gathered} If (x – 2)2 + (y + 3)2 + (z – 15)2 = 0, then what is the value of \\ x + y + z – 5? \end{gathered}$$

A shopkeeper marks up his wares by 60% and offers 25% discount. What will be the selling price (in Rs) if the cost price is Rs 1600?

What is the simplified value of 0.042+0.212-0.00840.043+0.213

When a number is divided by 63 the remainder is obtained as 26. What will be the remainder when the number is divided by 3?

If r sinθ=3 and r cosθ=1, then the values of r and θ are: (0°⩽θ≤90°)

If A alone can do a job in 40 days then, in how many days can B alone do the job if together they can do the job in 8 days?

In triangle ABC, AD, BE and CF are the medians intersecting at point G and area of triangle ABC is 156 sq.cm. What is the area (in sq.cm) of triangle FGE?

The average revenues of 13 consecutive years of a company is Rs 78 lakhs. If the average of first 7 years is Rs 73 lakhs and that of last 7 years is Rs 85 lakhs, what is the revenue for the 7th year?