rosala

208 Questions
3012 Answers

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i just thought this 30sec vid might give anyone whose too feeling stressed a bit of a tiny break.....

Dont Worry its child safe

https://www.youtube.com/watch?v=gu3KzCWoons

off-topic

rosala Aug 28, 2020

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A little bit of recognition to our old friends.

Hey Everyone,
Hope you guys are doing well , mentally and physically,.I just wanted to make a post after a long long time.
read more ..

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rosala Jul 11, 2020

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i have a few questions abt how the forum works.....

1.Why can i delete my questions?There is no deleting option.

2.Why cant i post anything on my previous questions?I tried but the posting option doesnt work?!
read more ..

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rosala Jul 11, 2020

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Hey, i've got something to say....

Since it’s been a while I last came, its home coming for me right?

read more ..

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rosala Aug 20, 2019

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a question involving lenses

the focal length of a concavo-convex lens of radius of curvature 5 cm and 10cm is 20cm. what will be its focal length in water.? given aµw = 4/3 .

ive tried solving this but my answer is incorrect, i have a bit of problem read more ..

off-topic

rosala Feb 7, 2019

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Optics(a more clear thread)

i prevviously posted optics questions but turns out the image isnt clear, this time ive done better preparation,

https://www.photobox.co.uk/my/photo?album_id=5568759114&photo_id=501647551932 read more ..

off-topic

rosala Feb 7, 2019

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Optics

Hey everyone,
how have you been,
im sorry i havent been here for months , and i know some of you mught be angry with me for posting a question and not getting back at it, and i really have no excuse except that i have so much to do thta read more ..

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rosala Feb 7, 2019

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Reflection

An object is placed exactly midway between a concave mirror of radius of curvature 40cm and a convex mirror of radius of curvature 30cm. The mirrors face each other and are 50cm apart. Determine the nature and position of the image formed by successive read more ..

ElectricPavlov ●

rosala Dec 2, 2018

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binomial theore tricky question

hey everyone, hows it going?

im having a really hard time doing this question, could anyone help...thanks in advance, i appreciate your hard work!!
read more ..

rosala Mar 22, 2018

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Back At It With PnC

Hello everyone,

i know you all might be bored by now with this but i cant help it...ive got some more PnC questions...and there are more like these so if anyone could help thatd be great!
read more ..

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rosala Feb 25, 2018

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Updates on my PnC questions!

hello everyone,

earlier i posted a few PnC questions and some of them are still unanswered and others in doubts. if you're interested in taking up the challege of making me understand or increase your knowledge, here are their links... read more ..

rosala Feb 19, 2018

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2019

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PnC attacks!!!

1. Define a "good word" as a sequence of letters that consists only of the letters A, B, and C and in which A never immediately followed by B , B is never immediately followed by C , and C is never immediately followed byA. If the nuber of n-letter good read more ..

rosala Feb 17, 2018

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A Shoutout post for CPhill! (and all those helping mathematicians)

CPhill, im really grateful to you.

You help this forum so much , devoting in your time to answer all of our questions , listen to our queries and help accordingly. It's so sweet and kind of you to do that. Im also read more ..

rosala Feb 16, 2018

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Permutations and Combinations!

1.A telegraph has x arms and each arm is capable of (x-1) distinct positions , including the position of rest. The total no. of signals that can be made is?

2. How many natural numbers are there fro 1 to 1000 which have none read more ..

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rosala Feb 16, 2018

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can anyone pls answer the first one!!!??

can anyone pls answer the first one!!!??

https://web2.0calc.com/questions/permutations-and-combinations-lt-3

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rosala Feb 10, 2018

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Permutations and Combinations!!! <3

1.Find the no. of permutations of letters a , b , c , d, e , f , g taken all at a time if neither “beg” nor “cad” patterns appear in any word.

2.Find the no. of ways in which letter sof the word SQUARE can be read more ..

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rosala Feb 9, 2018

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+5

ur welcome melody !

rosalaJun 5, 2014

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oh my god , thats a miracle , instead of harry potter how come spider man be in hogwarts ! lol!

rosalaJun 5, 2014

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+5

this ones oustanding !

rosalaJun 5, 2014

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+8

does that lovely star and the red carpet belong to me also because ive done both the things , !

rosalaJun 5, 2014

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+5

thats so funny !

rosalaJun 5, 2014

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+14

see my " all the best " works ! alan came so fast for ur helt after my " all the best " isnt it !

rosalaJun 5, 2014

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okay , the name sounds a bit scary but ill try to find out ! all the best for ur search !

rosalaJun 5, 2014

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is there a name of these kind of questions ?

rosalaJun 5, 2014

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actually that x came from my confusing head , u know ive recently got the habbit of thinking the right answer and then thinking some more and writing the wrong one! the answer u got is the same one i got ! by the way thanks for the right way ! thumbs up,!

rosalaJun 5, 2014

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u r questioning and answering urself ! is all this for our knowledge or what !

rosalaJun 4, 2014