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Magical Trick of Digital Sum: Part 2

Lesson 6 of 18 • 13 upvotes • 11:20mins

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Akash Singh

In this lesson we have discussed the application of the digital sum trick in identifying perfect square and perfect cube number. We also discussed some Compounded Interest based problems and saw how to eliminate the options using this amazing trick. Enjoy!

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1

Orientation Lecture and Remembering Tables

10:34mins

2

Quick Tricks to Square Numbers in 1 second

14:39mins

3

Square Root of Non Square Number in 3 seconds

12:33mins

4

Magical Trick of Digital Sum

13:15mins

5

General Shortcut to Squaring

13:52mins

6

Magical Trick of Digital Sum: Part 2

11:20mins

7

Perfect Squares and 1 Second CAT Question

11:47mins

8

The Base Technique to Multiply

13:20mins

9

The Base Technique : Part 2

9:12mins

10

Squaring in 2 Seconds - Part 2

13:04mins

11

Squaring in 2 seconds

12:29mins

12

Examiner's Favourite Squaring Patterns

12:03mins

13

Quick Multiplication Tricks

10:32mins

14

Quick Multiplication Tricks - Part 2

12:46mins

15

Quick Multiplication Tricks : Part 3

14:43mins

16

Quick Multiplication Tricks : Part 3

14:43mins

17

Quick Multiplication Tricks : Part 3

14:43mins

18

Criss Cross - The One Step Trick to Multiply

15:00mins

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