Math Riddle!!?

Question

I know the answer so you don't have to tell me how you solved if you don't want to

This is for my persanal enjoyment to see how many people know the answer.

Here is the riddle

You have a very long hallway in your home. There are exactly 1000 windows. -All of the shades are closed on all of the windows.- You go to a local school and get 1000 students.- You instruct the first student to open all of the shades.- You then instruct the second student to close the shades on every second window.- You then instruct the third student to go to every third window and open the shades if they are closed and close the shades if they open.- You instuct the fourth student to do the same to every fourth window.- And the fifth student to every fifth window. And so on.


After all 1000 students complete the process how many shades are open?

#3 you are right. The rest of you are so far off your like on Pluto.

Answer 1

I tried this for 25 windows and 25 people.

The blinds left open were 1, 4, 9, 16 and 25 (i.e. 1 squared, 2 squared, 3 squared, etc.). I assume that pattern continues leaving these open:

1, 4, 9,16, 25, 36, 49, 64, 81, 100, 121, 144, ...

The largest perfect square less than or equal to 1000 is 961 which is 31 squared so I say 31 blinds are left open.

So for any given number of windows and people, take the square root of that number and truncate anything after the decimal point. So 1,000,000 windows and people would leave 1,000 blinds open. 2,000,000 would leave 1,414.

Answer 2

Tara has $29.00 money. She offered 4 coloring books that fee $3.00 each, 4 packing packing containers of crayola crayons that fee $2.00 each. She spend something of her money on markers. how plenty money did she spend on markers answer:$9.00 on markers --------------------------------------... I certainly have 3 u . s . a . money. they are no longer 1 / 4, nor a dime, or a penny. It provides as much as 60 cents. What are the money. answer : A 50 cent piece and 2 nickels --------------------------------------... how are you able to upload 8 8's to get the huge style a million,000? (purely use addition) answer:the biggest to this math riddle is understanding that the only place must be 0. 888 +88 +8 +8 +8 =a million,000 --------------------------------------... 3 attorneys lease a hotel room for the night. whilst they get to the hotel they pay the $30 fee, then go as much as their room. quickly the bellhop brings up their luggage and provides the lawysers returned $5 using fact the hotel become having a particular decrease fee that weekend. So the three attorneys be certain to each shop between the $5 money and to offer the bellhop a $2 tip. although, whilst they sat right down to tally up their costs for the weekend the ought to no longer clarify right here info: one and all of them had initially paid $10 (in the direction of the preliminary $30), then each have been given returned $a million which meant that they each paid $9. Then they gave the bellhop a $2 tip. although, 3 • $9 + $2 = $29 The attorneys could no longer decide what got here approximately to the different greenback. inspite of each little thing, the three paid out $30 yet ought to purely account for $29. are you able to be certain what got here approximately? answer : There are ma huge apple procedures of explaining/thinking bout this rather concepts bending riddle! all of it boils right down to the reality that the attorneys's math is erroneous. they did no longer spend $9 • 3 + $2. They spent precisely $27 money. $25 for the room and $2 for the top. bear in concepts they have been given precisely $3, in complete returned. yet in a diverse thank you to think of with reference to the answer to this riddle is to purely pretend that the bellhop refunded $3 to the attorneys (particularly than giving them $5 and recieving $2 returned). If the attorneys get $3 returned and each takes $a million. They they spent precisely $27 money. --------------------------------------...

Answer 3

31

Answer 4

500

Answer 5

Um 1000?

Have a good evening. Please leave a comment if you are going to pick me as best answer.

Answer 6

Maybe 500 i guess...

Answer 7

Half of them?

Answer 8

all of em

Answer 9

I have no idea.

Answer 10

none all blind are closed