Since there is no repetition allowed, there are 10 possibilities for the 1st digit, 9 for the 2nd, 8 for the 3rd, and 7 for the 4th. This gives a total of (10)(9)(8)(7) = 5040 four-digit codes.
For all odd digits to be used, there are 5 possibilities for the 1st digit (1,3,5,7,9), 4 for the 2nd, 3 for the 3rd, 2 for the 4th. This gives a total of (5)(4)(3)(2) = 120 codes that only use odd digits.
Therefore there are 5040 - 120 = 4920 codes that do not consist of all odd digits. The probability is 4920/5040 = 41/42.
Answer:
ok so the first one is
1200x+2000
the second one is
1000x+3000
month 1.
a.3200
b.4000
month 2.
a.4400
b.5000
month 3.
a.5600
b.6000
month 4.
a. 6800
b. 7000
month 5.
a. 8000
b. 8000
They would equal out at 8000 in month 5
Answer:
Step-by-step explanation:
Factor out 6 from each term.
Take 6 as a common factor.
Answer:
X=1
Step-by-step explanation:
1=5x-4
5=5x
5/5=5/5x
X=1
