A safe is locked by a device consisting of five disks with the digits `0, 1, ......9` on each of them.The safe gets unlocked by dialing a certain combination of digits. Will ten days be enough to open the safe if the "working day" lasts 13 hours and it takes five seconds to dial one by combination of digits?

Lock of a safe consists of five discs each of which features the digits 0, 1, 2, ….., 9. The safe can be opened by dialing a special combination of the digits. If the work day lasts 13 hours and to dial one combination of digits takes 5 seconds, then number of days sufficient enough to open the safe, are

Lock of a safe consists of five discs each of which features the digits 0, 1, 2, ….., 9. The safe can be opened by dialing a special combination of the digits. If the work day lasts 13 hours and to dial one combination of digits takes 5 seconds, then number of days sufficient enough to open the safe, are

A number lock has 4 dials,each dial has the digits 0,1,2,..... What is the maximum unsuccessful attempts to open the lock?

A child attempts to open a five disc-lock (each disconsists of digits {0,1,...,9} ) He takes 5 sectime to dial a particular number on the disc.If he does so for 5hrs.every day,then the number of days he would be sure to open the lock is

A number lock can be unlocked by a 3 digit code, each digit of the code could be any one of 0, 1 ....,9. What is the maximum number of trials required to unlock, if the following are known (a) the last digit (b) the sum of the first two digits is always less than or equal to the third?

The lock of a safe has a dial with holes, sasy ten, in which the numbers 0,1,2,……..9 are inscribed in each hole. The lock can be opened only when a specific code numbersay of six digits is dialled. Suppose the code number is 249916, it means that the can be opened when we first dial 2, then 4 nd so on. Find the maximum number of trials which do not result in opening the lock.

The lock of a safe has a dial with holes, sasy ten, in which the numbers 0,1,2,……..9 are inscribed in each hole. The lock can be opened only when a specific code numbersay of six digits is dialled. Suppose the code number is 249916, it means that the can be opened when we first dial 2, then 4 nd so on. Find the maximum number of trials which do not result in opening the lock.

Tintin unlocks the chest, and plugs the key into the main door. A dial emerges on the door. Beginning with the dial set at zero, the dial must be turned counter-clockwise to the first combination number, (then clockwise back to zero), and clockwise to the second combina- tion number, (then counter-clockwise back to zero), and counter-clockwise again to the third and final number, where upon the door shall immediately spring open. There are 40 numbers on the dial, including the zero. Without knowing the combination numbers, what is the maximum number of trials required to open the safe (one trial equals one attempt to dial a full three-number combination)?