Quantitative Aptitude-Practice Set-4

1. If a light flashes every 6 seconds, how many times will it flash in ¾ of an hour?

Answer: 

   451 times.

Explanation:

            There are 60 minutes in an hour.

 In ¾ of an hour there are (60 * ¾) minutes  = 45 minutes.

         In ¾ of an hour there are (60 * 45) seconds = 2700 seconds.

 Light flashed for every 6 seconds.

         In 2700 seconds 2700/6 = 450 times.
     The count start after the first flash, the light will flashes 451 times in ¾ of an hour.

2. If point P is on line segment AB, then which of the following is always true?

 (a) AP = PB  
 (b) AP > PB 
 (c) PB > AP 
 (d) AB > AP 
 (e) AB > AP + PB

Answer:

(d)

3. All men are vertebrates. Some mammals are vertebrates. Which of the following conclusions drawn from the above statement is correct.

(a) All men are mammals 

(b) All mammals are men 

(c) Some vertebrates are mammals.

(d) None

Answer:  (c)

4. Which of the following statements drawn from the given statements are correct?

   Given:

All watches sold in that shop are of high standard. Some of the HMT watches are sold in that shop.

a) All watches of high standard were manufactured by HMT.

b) Some of the HMT watches are of high standard.

c) None of the HMT watches is of high standard.

d) Some of the HMT watches of high standard are sold in that shop.

Answer:  (b) & (d).

5. Eight friends Harsha, Fakis, Balaji, Eswar, Dhinesh, Chandra, Geetha, and Ahmed are sitting in a circle facing the center. Balaji is sitting between Geetha and Dhinesh. Harsha is third to the left of Balaji and second to the right of Ahmed. Chandra is sitting between Ahmed and Geetha and Balaji and Eshwar are not sitting opposite to each other. Who is third to the left of Dhinesh?

6. If every alternative letter starting from B of the English alphabet is written in small letter, rest all are written in capital letters, how the month  “ September” be written.
   (a)SeptEMbEr 
   (b)SEpTeMBEr  
   (c)SeptembeR 
   (d)SepteMber
   (e)None of the above.

Answer:      (e).
Explanation:

Since every alternative letter starting from B of the English alphabet is written in small letter, the letters written in small letter are b, d, f...

                In the first two answers the letter E is written in both small & capital letters, so they are not the correct answers. But in third and fourth answers the letter is written in small letter instead capital letter, so they are not the answers.