It is simple use of a^2 - b^2 = (a+b)(a-b) For example 15 × 17 = (16 -1)(16 +1)= 16^2 -1 = 256 - 1 = 255
@farismohiuddin61702 жыл бұрын
Exactly
@tonybarfridge43692 жыл бұрын
That's what he said, but he didn't explain till later why 1, because 1^2
@vinodmahindru45602 жыл бұрын
When tenth place is same and unit digits add up to 10 32*38=1216 3*4=12 2*8=16 Calculation can be done directly
@tonybarfridge43692 жыл бұрын
That one is simple but limited
@zeeshanabdullah69426 жыл бұрын
if the difference is 1,3,5,............ then how to multiply ........?
@prabhatmishra5986 жыл бұрын
Can we take pattern square of mid no.- n square
@subhamnath32162 жыл бұрын
Sir I have not understood the last one 11*17 ? The difference is 6 so 6 must be substracted not 9 , please correct me if I am wrong.
@sreehari972 Жыл бұрын
In that case difference is 6, so half of 6 =3 so 3^2=9
@vandanaahuja64147 жыл бұрын
thank u so much sir for giving amazing videos.. it's really helpful for us.....and u r brilliant sir☺
@lokeshnagasaikumar.molleti90973 жыл бұрын
Tq sir.
@anitawalia93506 жыл бұрын
I proved them. Thank you sir
@kumarragendra21606 жыл бұрын
Oh thnx sir ,thnx a lot for helpful suggestions
@aasthika.r52034 жыл бұрын
Sir how you got 14 and 13
@krishnachaitanya17696 жыл бұрын
Sir, why did you use 9 instead of 6 for difference 6, may I get explanation for that
@praneethkoushik55044 жыл бұрын
when the number is diffreing by 2 we took 1 square i.e (2/2=1) and when we the diffrence is 4 we took 2 square i.e (4/2=2) and finally when the difference is 6 we have to take (6/2=3) and hence 3square =9 .This is the logic behind that. I hope you could understand this now ..
@itsmemailingyou42349 ай бұрын
44x48 2200-88=2112
@sunitaahirwar40976 жыл бұрын
very helpful trick sir
@sujitsharma51586 жыл бұрын
Sir what's the mathematical reason behind this.
@sureshaggarwal6 жыл бұрын
+sujit sharma ....think of a basic algebraic identity
@maximmathew56706 жыл бұрын
vow,wonderful trick, especially for banking aspirants
@kumarragendra21606 жыл бұрын
I like your every video
@pujarajput38816 жыл бұрын
REALLY A VERY GOOD AND TIME CONSUMING TRICK
@pammisubbarao83354 жыл бұрын
Time saving really
@peddadarshanmkumar22934 жыл бұрын
Thank you sir you are brillaint sir really much of helpful your tricks
@hemar23686 жыл бұрын
thanks
@peterbrown2882Ай бұрын
You are supposed to make it easy, not complicated. Any 2, 3 or 4 digit number can be multiplied by 11 in the most simplest of forms. Here's how it can be done. 11x11 (1+1) = 2 place inbetween 1 1 for Ans: 121 14x11 (1+4)= 5 place inbetween 1 4 for Ans: 154 17x11 (1+7)= 8 Ans: 187 17x15 (1x1)=1 (7x5)=35 (7+5)=12 135 26x24 (2x2)=4 (6x4)=24 424 12 (6+4)=10 (10x2)=20 20 ---------- ---------- 255 624 That's what I call "simple"
@sureshaggarwalАй бұрын
Simple is something which we have practiced and inherited.
@peterbrown2882Ай бұрын
@@sureshaggarwal if it is something you have practiced and inherited, then why complicate it with your inbetween methods of multiplication. You shoulf know better than that. You are a good teacher no doubt. Keep up the good work. I was only pointing out what it should have been and was not. Cheers
@sureshaggarwalАй бұрын
@peterbrown2882 It sounded complicated to you...just you.
@peterbrown2882Ай бұрын
@@sureshaggarwal Not at all, and I'll tell you why. I wrote a book on how to become a math's WIZ some 10 years ago, and have given lectures on it over the years. I was an "honors" student in maths at an early age. Looks like you have misunderstood me. I am not the one that finds maths complicated in anyway, shape or form. I was referring to anyone interested in learning it, either by you or anyone else. Remember it's the begginers that our interest should be foremost on. I'm sure that you are very well aware of that. No offence to your capabilites intended.
@anitawalia93506 жыл бұрын
Why do these methods work?
@sureshaggarwal6 жыл бұрын
Identity based
@dt30426 жыл бұрын
Anita Walia (x+y)(x-y)=x²-y² He uses this identity
@factsunique0076 жыл бұрын
What if gap is 5 i mean 11×16 .... Unable to apply this... Plz clarify... Cuz if gap is an even number it's ok but what if it's odd number
@sureshaggarwal6 жыл бұрын
+Dharmendra Pandey.....gap should be even
@factsunique0076 жыл бұрын
Suresh Aggarwal hmmmm i tried it with more questions... Like 98 × 36 and 38 × 88 ... It's working ... I just got that ... (Square of the middle term of two digits - Square of the half of the gap between middle term )
@factsunique0076 жыл бұрын
Btw tricks are awesome and u r a very good teacher too sir 👍👍
@sureshaggarwal6 жыл бұрын
+Dharmendra Pandey .....Thanks
@itsmemailingyou42349 ай бұрын
If you want to use this method with numbers that have an odd difference you will wind up squaring with numbers that end in .5. Use the squaring any numbers that end in 5 trick to square them. The product will always end in .25 so you can just not add that since it gets canceled out. Since the squaring numbers that end in 5 trick is not just a number squared so understand n(n+1)=n^2+n to keep the first part of that trick easier to combine with the one in this vidoe when using larger squares you already know the product of. Again, I am using the square any number ending in 5 method, and dropping the .5^2 part of the result. 11x16, difference of 5, 5/2= 2.5 11+2.5=13.5 13^2+13=169+13=182 2.5 2^2+2=4+2=6 182-6=176=11×16
@shuklagiri71134 жыл бұрын
Just awesome
@gyanendrakumar23444 жыл бұрын
Phenomenal sir thanks
@punithcr65394 жыл бұрын
Tq so much sir
@bibekkumarrout64656 жыл бұрын
Very useful
@PriyaSharma-bt6qy7 жыл бұрын
too good...
@sitara-tabatakam6 жыл бұрын
Thank you sir
@opposites-369 Жыл бұрын
Why Hindi always genius? unfortunately the country still snafu because government still corrupt. 👍🏻🙏🏻
@piyushprakash24223 жыл бұрын
🙏👍👍👍👍👍👍👍👍👍👍👍
@kumarragendra21606 жыл бұрын
Video is not clearly seen
@sureshaggarwal6 жыл бұрын
+Kumar Ragendra....increase resolution of youtube video setting to 480p or above