How to find Square Of any Four Digit Number Quickly?

[@sreelakshmimp6]

Very interesting...very helpful!

[@jimitjain6748]

Sir...you are doing a great job...I am preparing for engineering and find it the most helpful trick....I will recommend my friends to subscribe here...please make more such videos...it saves us from a lot of complex calculation....and saves time in the exam hall

[@jeffinjose869]

Sir can we square 1025,1030 by this duplex method

[@jitendrashah1054]

i cannot understand how you solve but was good

[@fathima256]

thank u...

[@freddiehand6551]

Interesting, but you should go through more difficult cases, such as 9768!

[@jimitjain6748]

Freddie Hand I tried the number 5814 and the answer came flawlessly (p.s.- I had used it while solving a sum in physics.)

[@Justquantpage]

Hi,
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[@holi6004]

sir ! how did that ten come????

[@Justquantpage]

Duplex of abcd : D(abcd) = 2xaxd + 2xbxc. Hence, D(1221) = 2x1x1 + 2x2x2= 10