Quantitative Aptitude - Arithmetic Ability Questions

Two students appeared for an examination. One of them secured 16 marks more than the other and his marks were 75% of the sum of their marks. The marks obtained by them are

Which of the following quadratic equations has real roots?

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

Two men are on opposite sides of a tower. They measure the angles of elevation of the top of the tower as 30 ̊ and 45 ̊ respectively. If the height of the tower is 50 m, the distance between the two men is (Take √3 = 1.73)

If compound interest received on a certain amount in the 3rd year is Rs. 1,240, what will be the compound interest (in Rs) for the 4th year on the same amount at 9% rate of interest?

ΔDEF is right angled at E. If cosD = 8/17, then what is the value of secF ?

Find the total surface area (in cm2 ) of a hemisphere of diameter 42 cm.

In the following question, select the missing number from the given series.
 
1912, 2012, 2133, 2277, 2446, ?