Posted by Camela on Wednesday, December 26, 2012 at 8:26pm.
A lock on a bank vault consists of 3 dials, each with 30 positions. In order for the vault to open, each of the three dials must be in the correct position. How many different dial combinations are there for this lock?

Statistics  MathMate, Wednesday, December 26, 2012 at 9:23pm
Use the multiplication rule if the dial settings are independent of each other.
For example, if we have 4 independent dials each with 5 numbers, then we have 5 choices for each, and multiplication rule gives 5*5*5*5=625 combinations.

Statistics  Camela, Wednesday, December 26, 2012 at 10:50pm
30*30*30=
Answer This Question
Related Questions
 MATH  A certain type of combination lock has 3 dials: the first 2 dials each ...
 mathss  a combination lock has three dials, each numbered from 19. each ...
 Algebra  A combination lock has 10 dials. To open the lock, you must turn the ...
 PreAlgebra  A combination lock has 10 dials. To open the lock, you must turn ...
 math  you buy a bicycle lock with 4 dials to enter the combination. the first ...
 Physics  Find Acceleration and velocity of vault or car(from rest). This is ...
 Physics  The cars (2 cars) are pulling a vault out of the wall of a police ...
 precalculus  The function A=A0e^(0.0099x) models the amount in pounds of a ...
 Algebra 1  The function A = A0e0.01386x models the amount in pounds of a ...
 math  A gymnast received the following scores from 5 judges in the state ...
More Related Questions