Quantitative Aptitude - Arithmetic Ability Questions

If A + B = 90 deg and Cos B = 1/3, then the value of Sin A is

For real a, b and c if a2 + b2 + c2 = ab + bc + ca, then find the value of a+b+c2.

Amit is five years older than Vaibhav at present. After four years the ratio of their age will be 5:4. What is Amit age at present (in years)?

The co-ordinates of the centroid of a triangle ABC are (-1 , 4). What are the co-ordinates of vertex C if co-ordinates of A and B are (-3 , -1) and (3 , 5) respectively?

Which of the following option is CORRECT about the figure shown below?

When n is divided by 4, the remainder is 3. The remainder when 2n is divided by 4 is:

Simplify : 213 - 112 of 35 + 125 ÷ 213

What is the value of 2 consecutive natural numbers, sum of whose squares is 145?