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Learn Fast Calculation Tricks Part - 4 (in Hindi)
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In continuance with the previous lesson where Dhiraj had taught us techniques to find square roots of complex numbers and also he taught us some multiplication tricks. This lesson also focuses on such tricks which can make complex multiplication simpler. He explains them by solving some ​type of questions in this lesson.

Dhiraj Singh Chauhan
Income-tax Inspector, Cleared Assistant Commandant(SSB), From Saharanpur

U
Unacademy user
according to kartik chandra mondal wb has 5 administrative division 1. burdwan , 2. malda 3. presidency 4. jalpaiguri 5.medinipur which is effective from 19th may,2016 but here u told that wb has 3 divisions... hope u will clear it sir....thank u
Somnath Barui
a year ago
yes you are right it is effective before 2016, you can watch my INDIAN POLITY INDIAN GEOGRAPHY AMCIENT HISTORY MEDIVAL HISTORY.
yes i am following u ... your history and polity parts are very nice.. :)
D Dokri
a year ago
West Bengal shares the least Km as border with Nepal (96) and not Bhutan (197). Please correct that.
100-63=37 not 27 as u done by mistake in 1que of this video please correct this
Sir 100_63 = 37 not 27
last wala multiplication 2nd type mein karke ans nhi mil raha haii
109x93=10137.....this is a minute thing which is wrong
  1. How to do fast calculation? Presented by Dhiraj Singh Chauhan


  2. About me B.Sc.(Hons.) from BHU Varanasi - 24th rank in CGL-2015(tier 1+tier2) Score: tier 1-150 ier 2-347.25 total-497.25 out of 600 Course fee: CONTRIBUTE . Follow me on Unacademy at: https://unacademy.in/user/dhirajarya1


  3. 109 x 93 = 7 Bass=loo Base = DD 93 -63 Answer - loo l ol


  4. t17 l 2 Answer = 1.236 lo 5 -20Y 300 102-


  5. 997 983 997 9 83 980 3 17 +51 Answer = g80os1


  6. 1.13 x 9g Base -l000 1o13 13 -19 247 9 Answer = 993753


  7. 297 x 292 297 29 2 28 9 3 3x 283 3x 282 Annon. = 867 24 - 87