A person travels from P to Q at a speed of 40 kmph and returns by increasing his speed by 50%. What is his average speed for the both the trips? 

B. 48 KMPH
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

If 2, 4, 8 are related, which number is similar to this group based on their properties?

C. 16
Posted in:  Number Analogy -  Analogy -  Verbal Reasoning

  - Which of the following numbers is greater than 10 but less than 20?

A. 15
Posted in:  Selection Based On Given Conditions -  Puzzle Test -  Verbal Reasoning

In a group of five friends: Alice, Bob, Charlie, David, and Eva, the following conditions are given: 1) Alice cannot sit next to Bob. 2) Charlie must sit next to David. 3) Eva cannot sit at either end. Which of the following arrangements satisfies all conditions?

B. EVA, CHARLIE, DAVID, ALICE, BOB
Posted in:  Selection Based On Given Conditions -  Puzzle Test -  Verbal Reasoning

If the quadratic equation ax^2 + bx + c = 0 has roots r1 and r2, which of the following is true?

A. R1 + R2 = -B/A
Posted in:  Quadratic Equations -  Algebra -  Mathematics