Answer: it's impossible to obtain 78
Step-by-step explanation: Since the calculator can double any number or permute its digits except 0
starting with number 1
1, 2, 4, 8, 16, 32, 64, 128
Therefore, it's impossible to obtain 78 by a series of these operations
Answer:
the answer is 3
Step-by-step explanation:
11-8=3
17-11=6
6/2=3
40080 x 10
= 400800