In every competitive exam what makes you different from others is how fast you calculate Mathematics Sums....
!!Fast Calculation is Perfect Math!!
Articles by "Math Tricks & Shortcuts"
Showing posts with label Math Tricks & Shortcuts. Show all posts
Finding cube of a number above 20 in the usual way is difficult and time consuming.
With this math trick you can easily calculate cube of a number within seconds.
Here is that trick
Step 1: Assume the ten's place number of the given number as a and the unit's place number as b.
Step 2: Now, we all know that (a+b)3=a3 + 3a2b + 3ab2 + b3
We shall manipulate the same formula to calculate the cube of a number.
(i)Find b3 to get the last digit
If you get two digit number then, add ten's place digit to 3ab2
Dear Readers
We are uploading here Short tricks / short cuts / and Basis rules for mathematics for SSC IBPS SBI CTET HTET DSSSB KVS UPSC Railway FCI or other competitive Exams. I believe these tricks will be extremely useful. We have developed our methods and students have found them extremely useful over the years.
सवाल अब कीजिये चुट्कियों में
Subscribe to:
Posts (Atom)