Quantitative Aptitude - Quadratic Equation - Formula & Concept Quiz

Find the roots of the quadratic equation: x² + 2x - 15 = 0?

• 1]

  -5, 3

• 2]

  3, 5

• 3]

  -3, 5

• 4]

  -3, -5

The sum and the product of the roots of the quadratic equation x² + 20x + 3 = 0 are?

• 1]

  10, 3

• 2]

  -10, 3

• 3]

  -20, 3

• 4]

  -10, -3

The sum of the squares of two consecutive positive integers exceeds their product by 91. Find the integers?

• 1]

  9,10

• 2]

  10,11

• 3]

  11,12

• 4]

  12,13

The sum of the square of the three consecutive even natural numbers is 1460. Find the numbers?

• 1]

  18, 20, 22

• 2]

  20, 22, 24

• 3]

  22, 24, 26

• 4]

  24, 26, 28

A boat takes 90 minutes less to travel 36 miles downstream than to travel the same distance upstream. If the speed of the boat in still water is 10 mph, the speed of the stream is

• 1]

  2 mph

• 2]

  2.5 mph

• 3]

  3 mph

• 4]

  4 mph