354.9/9.1=39
So. elaine averaged 39 miles per gallon
4 because 2 shoes for each stock pair and 4 × 2 = 8
In great east japan a tsunami happened
Any of the 4 people can take the first seat
since it gets occupied by one person , the next seat can be occupied by any of the remaining 3
similarly, the next one has 2 possibilities and the last seat can only be occupied by the man who is left
so by the principal of multiplication, no. of ways equals 4! = 4×3×2×1 = 24 ways
The answer is Answer 30 i think