Please explain this question a solid cube of 4 inches has been painted red green black one pair of opposite faces it has been then cut into 1 inch cubes questions 1) how many cubes have no faces painted 2) how many cubes have three faces painted 3)how many cubes have only four faces painted 4) how many cubes have only one face painted Please say like these problems and say answer sir
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343 cubes of similar size are arranged in a form of bigger cube abd kept at the cornor of a room, all the exposed sides are painted then how many cubes have atleast 2 sides painted?
Thankyou sir. Can add Number of total cuts=(N-1)×3 Number of surfaces painted four side =0 as these types of questions also have been asked in some exams 👍
If you visualize it then it would be easy for you to understand Ans: cubes which are 2 faces colour are on edge except two at corners which have 3 colour so to remove them we subtract 2 (n-2) for each edge and there are 12 edges so we multiply by 12 and we get formula (n-2)×12
3 colored sides = 8, 2 colored sides = 4*(a+b+c-6), 1 colored side = 2*[(a-2)*(b-2)+(b-2)*(c-2)+(a-2)*(c-2)], 0 colored side = (a-2)*((b-2)*(c-2) these apply only when each side is cut.
Sir, could you please esplain this question - A cube of side 5 cm is painted on all its side. If it is sliced into 1 cubic centimeter cubes, how many 1 cubic centimeter cubes will have exactly one of their sides painted. Thank You
Short , sweet and to the point.
preparing for ntse this helped me a lot thnks a lot
Just outstanding sir, cleared all my doubts
nice teaching love u sir
This is super helpful, Sir. Thank you very much.
Very nice concept n trick ..thanks sir
Really nice of you sir🙏
Please explain this question a solid cube of 4 inches has been painted red green black one pair of opposite faces it has been then cut into 1 inch cubes questions
1) how many cubes have no faces painted
2) how many cubes have three faces painted
3)how many cubes have only four faces painted
4) how many cubes have only one face painted
Please say like these problems and say answer sir
1) 8
2) 8
3) 0
4) 24
Jo formula btaya h usi se karna h, n=4 hoga iss case me
One vedio lecture and all doubts are cleared
Teacher always must be like SURESH SIR
Wonderful explanation in short time......👌👌👌
Thanks a lot for the kind words
It helped me to solve SSC-CGL previous year questions 🙏🙏 thankyou
Your starting was very good about the concept of cutting along the length .. this was not told by any teacher in any video
Thank you sir for this video
Simple and clear....
Thank you sir, this video is very helpful.
Helpful video, thankyou so much.
Nicely explained
Thank you Sir it was very helpful but how did you work out the formula?
thank you sir
thank you
There is not a single doubt left when I watch your video sir….. you are really my mentor…. Thanks for sharing amazing ideas with students👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻
👍
Tq sir
Nice information
343 cubes of similar size are arranged in a form of bigger cube abd kept at the cornor of a room, all the exposed sides are painted then how many cubes have atleast 2 sides painted?
Very very very very very very very very fantastic
nice
lovely trick sir
Very helpful video
very helpful... Thank you sir
Excellent sir!!
It was helpful
Sir how the formulas constructed??
Please make a video for that..
Thank u very much sir. I m from Sri Lanka.
It is very helpful sir 👍
Thanks a lot sir 😄...I hope this will help me in CUET UG
Thank you so much sir! For explaining it in simplest form.😊
Thank you sir 😊🙏
Nice sir
sir thank you very much
thanks alot sir
Thankyou sir. Can add
Number of total cuts=(N-1)×3
Number of surfaces painted four side =0 as these types of questions also have been asked in some exams 👍
Thank you sir It was very helpful for my aptitude exams😊😊😊😊
How that 12 and 6 came, in case of 2 and 1 side painted
Thnks
Sir thanks for the trick
Good class❤
Sir tq tq so much my 10yrs of doubt this simply solved
Thank You 🙂
Thank you sir for very simple and clear lecture
Very nice concept... Thank you Sir
Thank u so much sir 👍👍👍
Very helpful
Very helpful..thank u
Very good explanation 👍🙏.... thanks alot 😊
thanku so much sir...best explanation 👌🙏
Sir, I was blank wrt this topic. Thankyou so much 🙏🏼🙏🏼🙏🏼...was very helpful
Thanku sir 🙏 ☺️ ❤️
What to do in case of a much larger cube broken into few small and few large cubes
It was very helpful...Thank you very much sir
Very very helpful ☺️👍
Nice video 👍
Thank u very much sir... loved ur shortcut ❣❣
Thanks a lot sir..this was really helpful
Well explained sir👏
thank youuuuu🌸🌸
Genius.fantastic
If we have all side painted then how to solve it sir
@@divyabharahtiperiasamy9413 all the sides can be painted only if there is only 1 cube
Can u please explain how these formula came ( (n-2)×12 etc)
@@nazrulhuda9 no sahi hai ye
If you visualize it then it would be easy for you to understand
Ans: cubes which are 2 faces colour are on edge except two at corners which have 3 colour so to remove them we subtract 2 (n-2) for each edge and there are 12 edges so we multiply by 12 and we get formula (n-2)×12
@@yatharthmahoar6154
Yes, you are correct
😂2 min silence for those who use this, formula is wrong
Thank you so much🙆🏻♀️
Awesome sir ...❤️
Best
Nice VDO
Kidar se Ho aap
Sir please explain about how many circles in more circles
Yes sir please explain
good explained
Thank you sir nice explaination
Well explained👌👌
Sir Please Explain same Concept in case of Cuboid.
Hearty Request
3 colored sides = 8, 2 colored sides = 4*(a+b+c-6), 1 colored side = 2*[(a-2)*(b-2)+(b-2)*(c-2)+(a-2)*(c-2)], 0 colored side = (a-2)*((b-2)*(c-2) these apply only when each side is cut.
Very helpful 👌☺🙂👏😀😊👌☺🙂
Thank You Sir💥
Thank u sir plz upload more vdos
Helpful 👍
Thankyou 😇
Tq sir it is very usefull
Thx sir
Nice 👍
Thank you! Cheers!
How to calculate if only few faces are painted ?
thanks it was very helpful 🤓🤓for @yk7
yes i am a nerd
Sir, could you please esplain this question - A cube of side 5 cm is painted on all its side. If it is sliced into 1 cubic centimeter cubes, how many 1 cubic centimeter cubes will have exactly one of their sides painted. Thank You
I think the answer is 34. I am not sure. I used the equation[n-2]^2*6. but I am confused with the statement '1 cubic cm'
we need for 1 side painted, hence the formula which will be used should be (n-2)*12 = (5-2)*12 = 3*12 = 36
54ans
Total no. of cubes = 125
Let n=5
No. Of cubes with one side painted= (n-2)^2 * 6
= 3^2 * 6 = 54
Hope it helps!🙃
Using the formula, we get 54.
But what if adjacent faces are painted??
Thank you sir that was easy to understand
Sir please make a videos on permutations & combinations
Sure....keep watching
You should have explained using a cube diagram
Thanks sir it's very clear
Instructional video. Does not provide concept on how no of painted surfaces is (n - 2) x 12
Very useful and very easy
Thanks 🙏
Thqqq u sooo much for wonderful lecture I understood very well thqqqqq u sir
Sir will u stream today?
Yes 8 PM
Whose here because of online classes
who liked this videos tricks and formulas like
Sir tusi to great
Tophu kubul karo xD
Thankyou sir 😇✨ it’s a great one
Awesome
sir can u pls make a video of cuboid one , humble request pls sir