Quantitative Aptitude - Arithmetic Ability Questions

Select the odd word/letters/number/number pair from the given alternatives.

Select the odd number from the given alternatives.

If [2(4x/5 - 3/4)]/3 - 5/3 = -1/6, then the value of x is?

Find the area (in sq.cm) of a semi-circle of radius 7 cm

Two water squash mixtures, the first with a water-to-squash ratio of 5:1 and the letter with a ratio of 3:1 are blended in the ratio 3:2. What is the final water : squash ratio in the blend?

How long does a train, 75 m long, moving at 60 km/hr take to pass a certain telegraph post?

A boat is sailing towards a lighthouse of height 20√3 m at a certain speed. The angle of elevation of the top of the lighthouse changes from 30° to 60° in 10 seconds. What is the time taken (in seconds) by the boat to reach the lighthouse from its initial position?

The ratio 1 : 5 can be expressed in decimal as