Answer:
1 year (10 months)
Step-by-step explanation:
There are 10 digits 0 1 2 3 4 5 6 7 8 9 if we can't use 0 and 1 then there are only 8 choices for the first digit and only 2 choices for the second digit and 10 for the third so there are 8*2*10 =160 possibilities.
Neither XP Hope this helps
6+1/343+36+1/81−27−36+1/81-27-243+1/256+1/144+1/8+1/5