there are 2 hour glass. one is 13min hour glass. another is
8min hour glass. u need to stop a button exactl aftr
18min..how do u calculate when 18min is passed?
- 3 Answers
- 9768 Views
- Exilant, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / deepak
Now start both the hour glasses after 8 min 2nd hour glass
will be empty(8min passed) and 1st hour glass have 5 min
left now invert the 2nd hour glass and let pass the
remaining 5 min left in 1st glass(8+5=13min passed)and at
the same time compare it with 2nd glass now we know with
passing of 5 min in first glass there is 3 min left in 2nd
glass because we have inverted and 5 min left in down
portion now again invert the 2nd glass then the 5 min will
pass so 8+5+5=18min.Thanks.
| Is This Answer Correct ? | 27 Yes | 5 No |
Answer / swet
let A be the 8 hour glass and B be the second glass..start
both glass at a time..
1)when glass A over the remaining mins in glass B will be
A=8 B=5
2)start both glass again..while glass B over,
A=3 B=13
3)start again..while glass A over,
A=8 B=10
so,finally can calculate for 18 mins..
| Is This Answer Correct ? | 15 Yes | 3 No |
Answer / shesh
Start 13 min and 8 min hr-glasses together.
1)When 8 min glass is done, throw it and START count i.e 13
min glass has 5 mins left (5 minutes)
2)Then rotate the 13 minute glass and count till it is fully
on the other side (13 minutes) END COUNT
TWO STEPS ONLY..
5+13 = 18 mins
| Is This Answer Correct ? | 11 Yes | 3 No |
what is the main reason to ask this type question in your interview sir?
the age of baby will b 5 time after 20 yrs what is present age?
500 men are arranged in an array of 10 rows and 50 columns according to their heights. Tallest among each row of all are asked to come out. And the shortest among them is A. Similarly after resuming them to their original positions, the shortest among each column are asked to come out. And the tallest among them is B. Now who is taller A or B ?
On the shelf you have 10 identical bottles of identical pills (let?s say there?s a hundred pills in each bottle). However, one of those 10 bottles contains cheap knockoff pills. The only way to differentiate fake pills from real pills is the weight - while real pills weigh 1 g each, the knockoff pills are only 0.9 g. You have one scale that shows the exact weight (down to the mg) of whatever is weighed. How can you tell which bottle contains fake pills with just 1 weighing?
Scientist decided to do a study on the population growth of rabbits. Inside a controlled environment, 1000 rabbits were placed. Six months later, there were 1000Z rabbits. At the beginning of the 3rd year, there were roughly 2828Z rabbits, which was 4 times what the scientists placed in there at the beginning of the 1st year. If Z is a positive variable, how many rabbits would be there at the beginning of the 11th year?
I bought a car with a peculiar 5 digit numbered licence plate which on reversing could still be read. On reversing value is increased by 78633. Whats the original number if all digits are different?
2 Answers Mettler Toledo Turing Software, TCS, Vijay Industries,
There are 8 coins in a bag . 3 coin weights x kg 3 coins weights y kg 2 coins weights z kg 2 coins weights w kg You have to separate them into separate heaps according to their weights .
Kate, Demi, Madona, Sharon, Britney and Nicole decided to lunch together in a restaurant. The waiter led them to a round table with six chairs. How many different ways can they seat?
A Newyorker stays in 36th floor. Daily he goes to his office by walk and returns. While raining, he takes the lift goes to lobby and reaches by walk to his office. In the evening he returns to the building, takes the lift and reaches his apartment on 36th Floor. When it is summer, he takes the lift, goes to lobby and reaches his office by walking. In the evening, he returns home, takes the lift goes to 30th floor and climbs all the six floors by stair case and reaches his apratment. Why?
Ekta got chocolates to give her friends on her Birthday. If she gives 3 chocolates to each friend, one friend will get only 2 chocolates. Also, if she gives 2 chocolates to each friends, she will left with 15 chocolates. How many chocolates Ekta got on her Birthday? and how many friends are there?
In a sports contest there were m medals awarded on n successive days (n > 1). 1. On the first day 1 medal and 1/7 of the remaining m - 1 medals were awarded. 2. On the second day 2 medals and 1/7 of the now remaining medals was awarded; and so on. 3. On the nth and last day, the remaining n medals were awarded. How many days did the contest last, and how many medals were awarded altogether?
My friend collects antique stamps. She purchased two, but found that she needed to raise money urgently. So she sold them for Rs. 8000 each. On one she made 20% and on the other she lost 20%. How much did she gain or lose in the entire transaction?
English 
