Alt test - numarul de telefon

1.Key-in the first 3 digit of your phone number into the calculator.
2. Multiply by 80.
3. Add 1.
4. Multiply by 250.
5. Plus last four digit of phone number.
6. Plus last four digit of phone number again.
7. Minus 250.
8. Divide by 2 at last.
Is it your Phone Number?
> >

EDDY spune:

Yes,it is!



Eddy & Antonia Naomi

tata_lu_julia spune:

... but only if you use a 7-digit number. The math is kids stuff:

My number = a*10exp4 + b = a*10000 + b

Calculation:
[(a*80 + 1)*250 + 2*b - 250]/2=
(a*20000 + 250 + 2*b -250)/2=
(a*20000 + 2*b)/2=
a*10000 + b

Voilą!

For longer or shorter numbers it will give a wrong result

papadie spune:

caterina spune:

asa este!!!

Catalin spune:

quote:

---

Originally posted by tata_lu_julia
My number = a*10exp4 + b = a*10000 + b

Calculation:
[(a*80 + 1)*250 + 2*b - 250]/2=
(a*20000 + 250 + 2*b -250)/2=
(a*20000 + 2*b)/2=
a*10000 + b

---

...in ce limba straineza e scrisa chestia de mai sus, ca mi-am prins urechile!



Think pink!

mamamariana spune:

La mine nu merge... ca nr. de telefon are doar 6 cifre.
Mamamariana

tata_lu_julia spune:

@e-cata:

in engleza? ca si problema, de altfel...

cheers

ralucami spune:

Nici la mine nu iese!!Si eu am nr tot de 6 cifre, iar mie imi iese un nr de 7 cifre, iar cea din mijloc este in plus

Hai noroc si sanatate- ca-i mai buna decat toate!

Marianar spune:

parpalak spune:

Ca sa mearga cu 6 cifre, inlocuiti 250 cu 25. :)
Ca sa mearga cu 8 cifre, inlocuiti 250 cu 2500. :))
Etc..

Sanatate la bebei si mamici.
http://community.webshots.com/user/parpalak