1970 AHSME Problems/Problem 31

Revision as of 16:01, 2 October 2014 by Timneh (talk | contribs) (Created page with "== Problem == If a number is selected at random from the set of all five-digit numbers in which the sum of the digits is equal to 43, what is the probability that this number wi...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Problem

If a number is selected at random from the set of all five-digit numbers in which the sum of the digits is equal to 43, what is the probability that this number will be divisible by 11?

$\text{(A) } \frac{2}{5}\quad \text{(B) } \frac{1}{5}\quad \text{(C) } \frac{1}{6}\quad \text{(D) } \frac{1}{11}\quad \text{(E) } \frac{1}{15}$

Solution

$\fbox{B}$

See also

1970 AHSC (ProblemsAnswer KeyResources)
Preceded by
Problem 30
Followed by
Problem 32
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
All AHSME Problems and Solutions

The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions. AMC logo.png