In the place of "Find the sum of all products whose...", I would say: "Find the number of all products whose..." ;-)
Why  instead of 0?
Since I have kludged a solution together, can I have a hint?
this solution works on my comupter
I see the first test command line is corrupted
:( :( :(
I've fixed that first line in the test suite. Try it again.
Program an exclusive OR operation with logical operators
Convert a numerical matrix into a cell array of strings
Return elements unique to either input
Circular Primes (based on Project Euler, problem 35)
CONVERT TAN TO SIN
Magic is simple (for beginners)
Narcissistic number ?
Decrypt the cypher using XOR encryption (for beginners)
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office