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Video Tutorials

Posted by Unknown on 2:58 AM in
Video tutorials to Study the Complex  Mathematical Calculations Easily using only your Mind with no PAPER OR PEN IN HANDS 

Download Link #1: Click Here

Download Link #2: Click Here

Download Link #3: Click Here


Birthday Calculator

Posted by Unknown on 2:25 AM in
Step1: Add 18 to your birth month.
Step2: Multiply by 25.
Step3: Subtract 333.
Step4: Multiply by 8.
step5: Subtract 554.
step6: Divide by 2.
step7: Add your birth date.
step8: Multiply by 5.
step9: Add 692.
step10: Multiply by 20.
step11: Add only the last two digits of your birth year.
step12: Subtract 32940 to get your birthday!.

IF the Result is like .....51892

Then 18-Date
92 -Year 


Age Calculator

Posted by Unknown on 2:15 AM in

1) Pick a no frm 1 to9

2) Multiply your number by 2

3) Add 5 to the number u created in step2

4)Multiply the no.u created in step3 by 50

5) IF u havent had ur b'day 

Add 1760 else Add 1761

6)Subtract the year u where born



my Age is 18.... i.e last Two Digits :-) try it out & enjoy :) 


Trick to make appear a number four times

Posted by Unknown on 2:11 AM in
This trick is going to make a number you choose appear six times (to get the best effect it helps if you have a calculator). Think of a number between 1 and 9. Now multiply it by 7, then by 3, next by 11, then by 37, and finally by 13.


Let if i choose a no.4 then





34188*13=444444 :-) 

also try this using C programing and C++ programming for your leisure time practices :-)


Hand Calculator

Posted by Unknown on 2:04 AM in ,


Draw these calculator keys on your palms with a ballpoint pen.

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Tell your friend that she can multiply by 9 on your hands just as she would on a regular calculator. After she enters the numbers and pushes (=) , just bend over the finger that is multiplied by 9. The fingers that are standing up tell her the answer!

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Digital Roots by Casting "9"

Posted by Unknown on 1:50 AM in ,

What is Digital root? 

If we add up the digits of a number until there is only one number left we have found what is called the digital root. In other words, the sum of the digits of a number is called its digital root.


For 5674, 5 + 6 + 7 + 4 = 22 and 2 + 2 = 4

» 4 is the digital root of 5674

One use of digital roots is for divisibility tests (like 3 and 9). This method makes it easier to calculate the digital root.


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Find the digital root of 257520643

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1. 2 + 7 = 9, cross out 2 and 7.

2.4 + 3+2 = 9, cross out 4, 3 and 2.

3.There are no other groups of numbers adding up to 9.

4.Add up the remaining digits, 5 + 5 + 0 + 3 = 13.

5.13 is more than 9, so 1 + 3 = 4.

6.The digital root is 4.

If there is nothing left after having cast out nines then the digital root is 9.


Syllabus for EIE dept Anna Univ Chennai

Posted by Unknown on 5:06 AM in , , ,

Posted by Unknown on 10:40 AM in
St.Joseph's college of engineering : Internal marks


DSD two marks (Digital System Designs)

Posted by Unknown on 4:43 PM in
DSD two marks :  Download here

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