Quantitative Aptitude - Arithmetic Ability Questions

Of the 3 numbers whose average is 64, the first number is 1/3 times the sum of other 2. The first number is

The amount of extension in a spring is proportional to the weight hung on it. If the weight of 5 kgs produces an extension of 0.4 cm, what weight would produce an extension of 5cm?

The area of a semicircle is 1925 cm2. Calculate its perimeter (in cm).

The measures of the four angles of a quadrilateral are in the ratio 1:2:4:5. What is the measure of the biggest angle?

Find the smallest of the following decimals.

What is the time taken by a 180 m long train running at 54 kmph to cross a man standing on a platform?

Which of the following is the correct option for the congruency of the two triangles ABC and PQR as per the SAS congruency criterion?

 What is the value of (sin60° - 2/√3) ?