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.
Answer:
I got an answer of X = 2
Step-by-step explanation:
I used subtituion and got 2
6*13=78
they can set up 78 tables an hour
500/78=6.41025641026
rounded=6.4103
they would take 6-7 hours to set up 500 tables
they should start set up at 11:00 a.m
Solution:
Let number of upgrade options = p
Let total number of distinct variations in which 256 new homes is available = k
So, p × p× p.....k times = 256
⇒
256= 2 × 2 ×2 ×2 ×2 ×2 ×2 ×2= 
256= 4 ×4 ×4 × 4=
So,Either, number of upgrade options = 2 ,
Or , Number of upgrade options = 4