Chat is open in another window. Click "User Here" to use chat in the window.

About this Community
Members
0
Total Visits
0
Hi Everyone. I received a whatsapp message today about a young Nigerian boy who has discovered a new way to test for divisibility by 7. It is called the Chika Test and here's how it works. To test if a number is divisible by 7, multiply the last digit by 5. Then add it to the remaining number. Example - 1: is 532 divisible by 7? Multiply 2 x 5= 10; Then 10+53= 63. 63 is divisible by 7 Example - 2: Is 987 divisible by 7? Multiply 7 x 5 = 35; Then 35 + 98 = 133; 133 / 7 = 19 This is one of those things that make you go "wow" Do you know of anything similar?
Comments 1 Comments
why is 0!=1?
Comments 2 Comments
view previous comments
flag
33 weeks ago
Shouvik Continuing my previous post: 1! = 1 since there is a single way to arrange 1. Now for 0!, there are "no ways" to arrange it, which means that is the only answer, hence 0! is 1.
Page 1 of 1   

Control Signals Part 1
Engg and Tech
view 20106 Interactions
votes 0 Upvotes
Free
Encrypted File System PPT
Engg and Tech
view 19906 Interactions
votes 0 Upvotes
Free
Web Services
Engg and Tech
view 7450 Interactions
votes 0 Upvotes
$ 4.17
SOP Duke University
Engg and Tech
view 7700 Interactions
votes 0 Upvotes
$ 20.83
SOP Dartmouth University
Engg and Tech
view 7671 Interactions
votes 0 Upvotes
$ 20.83
C language Assignments with 35 most common programs
Engg and Tech
view 7754 Interactions
votes 0 Upvotes
$ 8.33
IAS Modern India Notes 5
Arts & Humanities
view 7549 Interactions
votes 0 Upvotes
$ 4.17
IAS World History Notes 3
Arts & Humanities
view 20417 Interactions
votes 0 Upvotes
Free
IAS Indian Economy Notes 16
Arts & Humanities
view 20051 Interactions
votes 0 Upvotes
Free
IAS Macro Economics Notes 3
Arts & Humanities
view 19927 Interactions
votes 0 Upvotes
Free
IAS Microeconomics Notes 1
Arts & Humanities
view 19988 Interactions
votes 0 Upvotes
Free
NANOtechnology
Engg and Tech
view 7623 Interactions
votes 0 Upvotes
$ 4.17
Page 1 of 6169   
Ask for notes. Post questions.

Get notes & answers from experts!

no asks
Ask your first question.
no asks
No Asks Found
samhitha
1 week ago
Anyone what ncrt notes
download 0 Comments
share 0 Answers
share 0 Uploads
votes 0 Downvotes
COMMENT
SHARE
nagoormeerankm
1 week ago
i have purchased some notes how can i down load that note and books
download 0 Comments
share 0 Answers
share 0 Uploads
votes 0 Downvotes
COMMENT
SHARE
srimangalamavuduru482
1 week ago
Do any one want 1 to 100 tables
download 0 Comments
share 1 Answers
share 0 Uploads
votes 0 Downvotes
COMMENT
SHARE
ajoyruidas625
1 week ago
Geology
download 0 Comments
share 0 Answers
share 0 Uploads
votes 0 Downvotes
COMMENT
SHARE
hamzakhurshid
1 week ago
Gross and microscopical changes in Barret Esophagus
download 0 Comments
share 0 Answers
share 0 Uploads
votes 0 Downvotes
COMMENT
SHARE
brahmanandadas
1 week ago
Notes for ckt&fld,emmi, control system,Eptd
download 0 Comments
share 0 Answers
share 0 Uploads
votes 0 Downvotes
COMMENT
SHARE
brahmanandadas
1 week ago
GATE possible questions and solution for electrical engineer
download 0 Comments
share 0 Answers
share 0 Uploads
votes 0 Downvotes
COMMENT
SHARE
brahmanandadas
1 week ago
Ojee202possible questions and solution for Btech lateral entry students
download 0 Comments
share 0 Answers
share 0 Uploads
votes 0 Downvotes
COMMENT
SHARE
rudrakshmehta
1 week ago
Can I get Allen topper noted by notes easy for jee
download 0 Comments
share 0 Answers
share 0 Uploads
votes 0 Downvotes
COMMENT
SHARE
rashikapandey376
1 week ago
If anyone wants law notes for any subject of law. Kindly connect. Thank you.
download 0 Comments
share 0 Answers
share 0 Uploads
votes 0 Downvotes
COMMENT
SHARE
knagarani18888
1 week ago
I can pay through google pay. Is it available?
download 0 Comments
share 0 Answers
share 0 Uploads
votes 0 Downvotes
COMMENT
SHARE
genius.toppers2020
2 weeks ago
how many days does notesgen usually take to review the notes fput for sale??
download 0 Comments
share 1 Answers
share 0 Uploads
votes 0 Downvotes
COMMENT
SHARE
Page 1 of 768   
Balaiah
Balaiah

Hi

Deepanshu Gupta
Deepanshu Gupta

Gkg kolhapur
Gkg kolhapur

Roshan Kumar Singh
Roshan Kumar Singh

Krishna gajera
Krishna gajera

Patel viral v
Patel viral v

Sanjeev Kumar
Sanjeev Kumar

Nawaraaj Khanal
Nawaraaj Khanal

Pratiksha dhole
Pratiksha dhole

Page 2 of 209