Hmmmm well I would first round the 1 and make it a 0 round the 9 and add to 6 and round 7 (was originally 6) to add 1 to 25 and then round 26 to 30
First you have all ten books, but then every time after, you loose one because you can't put the same book in the group twice.
10 * 9 * 8 * 7 = 5040 groups
The choice isB
all the numbers in that choice decrease in numerical order
He will never reach the full foot, this is because if he travels 1/2 of the distance of the previous jump each time there will always be a fraction that is unaccounted for.
Answer:
Given in the question itself ......1 would be 33 seconds .......................
