Oct 21, 2010

How many times will it flash??

If a light flashes every 6 seconds, how many times will it flash in 3/4of 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.

Who was the second?

5 boys were climbing a hill. J was following H. R was just ahead of G. K was between G & H. They were climbing up in a column.Who was the second?



Answer:
G.
            Explanation:
            The order in which they are climbing is R – G – K – H – J    

What is the relation?

Introducing a boy, a girl said, "He is the son of the daughter of the father of my uncle." How is the boy related to the girl?

Answer:Brother
Explanation:
The father of the boy's uncle → the grandfather of the boy and daughter of the grandfather → sister of father.

Oct 19, 2010

How many times do the hands of a clock coincide in a day?

How many times do the hands of a clock coincide in a day?

Answer:
22

Explanation:
The hands of a clock coincide 11 times in every 12 hours (Since between 11 and 1, they coincide only once, i.e., at 12 o'clock).
AM
12:00
1:05
2:11
3:16
4:22
5:27
6:33
7:38
8:44
9:49
10:55


PM
12:00
1:05
2:11
3:16
4:22
5:27
6:33
7:38
8:44
9:49
10:55

The hands overlap about every 65 minutes, not every 60 minutes.
The hands coincide 22 times in a day.

What will be the time?

If time at this moment is 9 P.M., what will be the time 23999999992 hours later?

Answer :
1 P.M


Explanation
  24 billion hours later, it would be 9 P.M. and 8 hours before that it would be 1 P.M.
 

Oct 18, 2010

Find the length of the tunnel..

A train 800 metres long is running at a speed of 78 km/hr. If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is??


Answers:
500meters


Explanation:

Speed =(78 x5(m/sec=(65(m/sec.
183

Time = 1 minute = 60 seconds.
Let the length of the tunnel be x metres.
Then,(800 + x(=65
603

=> 3(800 + x) = 3900
=> x = 500

What is the relation??

Boy's mother in law is mother of girl's mother in law then what is relation between boy and girl?


Answer:
Girl is boy's daughter-in-law.

Oct 16, 2010

What is the age of youngest child??

The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?

Answer: 
4 Years.

Explanation:
Let the ages of children be x, (x + 3), (x + 6), (x + 9) and (x + 12) years.
Then, x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 50
 5x = 20
 x = 4.
 Age of the youngest child = x = 4 years.

What is the percentage??

A batsman scored 110 runs which included 3 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets?

Answer: 
455%
11
Explanation:
Number of runs made by running = 110 - (3 x 4 + 8 x 6)
= 110 - (60)
= 50.
 Required percentage =50x 100% = 455%
11011

Oct 15, 2010

How is this possible???

Hans is standing behind Gerrie and at the same time Gerrie is standing behind Hans. How is this possible?


Answer:
They are standing Back to Back