Interested to Buy Any Domain ? << Click Here >> for more details...
If one person sends the e-mail to two friends, asking each
of them to copy the mail and send it to two of their
friends, those in turn send it to two of their friends and
so on.
How many e-mails would have been sent by the time it did 30
sets?
- 2 Answers
- 6853 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / guest
2147483646
First person sent the mail to 2 persons. Those 2 sent the
mail to 2 persons each, total 4 persons. Now, those 4 person
sent mail to total 8 persons, then 8 to 16 persons, 16 to 32
persons and so on.... Hence, it a series of 2, 4, 8, 16, 32
upto 30 numbers
It is a Geometric series with common ratio 2 and first
number is also 2. Summation of such series is given by A *
(Rn - 1) / (R - 1) where
A = First term
R = Common Ratio
n = total numbers
So total number of times mail sent by the time it did 30 sets
= 2 * (230 - 1) / (2 - 1)
= 2 * (1073741824 - 1)
= 2 * 1073741823
= 2147483646
| Is This Answer Correct ? | 8 Yes | 1 No |
Two people enter a race in whick you run to a point and back. Person A runs 20 mph to and from the point. Person B runs to the point going 10 mph and 30 mph going back. Who came in first?
Nine plates of similar in design... same colour, same size but one plate among that has very small difference in weight. you should find it but the condition is u can use weighing pan only two times. at the second time u should be able to find the defeated plate..............
If A,B,C,D,E r 5 members of a family.4 of them give true statements : 1. E is my mother in law 2. C is my son in law's brother 3. B is my father's brother 4. A is my brother's wife Who made the stmt. and what r the realtions among them Ans. E
When Alexander the Great attacked the forces of Porus, an Indian soldier was captured by the Greeks. He had displayed such bravery in battle, however, that the enemy offered to let him choose how he wanted to be killed. They told him, "If you tell a lie, you will put to the sword, and if you tell the truth you will be hanged." The soldier could make only one statement. He made that statement and went free. What did he say?
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 .
There are 4 mathematicians - Brahma, Sachin, Prashant and Nakul - having lunch in a hotel. Suddenly, Brahma thinks of 2 integer numbers greater than 1 and says, "The sum of the numbers is..." and he whispers the sum to Sachin. Then he says, "The product of the numbers is..." and he whispers the product to Prashant. After that following conversation takes place : Sachin : Prashant, I don't think that we know the numbers. Prashant : Aha!, now I know the numbers. Sachin : Oh, now I also know the numbers. Nakul : Now, I also know the numbers. What are the numbers? Explain your answer.
A man got 30 aples in 1 Rs.Now he want 20% of profit on it. How many apples He should Sell in 1 Rs.??
Solve this Murder case (challenge).. A man was found murdred on 02/10/2010 wednesday afternon at 2:10pm in his house...... His wife called police.. Police questioned everyone.. Wife: I was sleeping.. Neighbours: We went 4 the marriage.. Driver: I went to Bank.. Cooker: I went to Market.. Watch Man: I went to My relations Marriage.. Police arrested murderer immediately.. Who was it? "Reply if u r briliant with correct reason"
A rich old Arab has three sons. When he died, he willed his 17 camels to the sons, to be divided as follows: First Son to get 1/2 of the camels Second Son to get 1/3rd of the camels Third Son to get 1/9th of the camels. The sons are sitting there trying to figure out how this can possibly be done, when a very old wise man goes riding by. They stop him and ask him to help them solve their problem. Without hesitation he divides the camels properly and continues riding on his way. How did he do it?
3 boys ,a,b,c . have 3 chocklets .. a ate the chocklet.b thrown away the chocklet and c ate half chocklet .now how many choclect each have in their hand.
In a city, The police has surrounded the Bank. There are 50 people in the building. Each person is either an engineer or a manager of the bank. All computer files have been deleted, and all documents have been shredded by the managers.
A man is going to an Antique Car auction. All purchases must be paid for in cash. He goes to the bank and draws out $25,000. Since the man does not want to be seen carrying that much money, he places it in 15 evelopes numbered 1 through 15. Each envelope contains the least number of bills possible of any available US currency (i.e. no two tens in place of a twenty). At the auction he makes a successful bid of $8322 for a car. He hands the auctioneer envelopes number(s) 2, 8, and 14. After opening the envelopes the auctioneer finds exactly the right amount. How many ones did the auctioneer find in the envelopes?
English 
