A thief steals an ATM card and must randomly guess the correct five-digit pin code from a 7-key keypad. Repetition of digits i
1 answer:
Answer:
1 in 16,807 chance or a 0.00595% chance
Step-by-step explanation:
There is only one correct 5-digit pin that the thief must guess. If there are 7 possible values for each of the five digits, the total number of combinations is:
Therefore, there is a 1 in 16,807 chance or a 0.00595% chance that the thief will guess on the first try.
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Answer:
a. 1/20 liters in each glass.
b. 50 ml in each glass.
Step-by-step explanation:
a. To find how many liters are in each glass, you have to divide the 1/4 liters by 5 glasses, because the water is poured equally.
Using the division properties of fractions:
b. Use the rule of three to convert from liters to milliliters.
- 1 l = 1000 ml
- 1/20 l = x ml
Now, multiply 1/20 l by 1000 ml and divide by 1 l to obtain x.
