Quantitative Aptitude - Arithmetic Ability Questions

If the line DE is drawn parallel to the base BC of a triangle ABC by intersecting the other two sides, then which of the following is the CORRECT equation for this case.

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).

AD is the Median of Δ ABC. If O is the centroid and AO = 10 cm then OD is

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) ?

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by aLogic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.