A hundred stones are placed, in a straight line, a yard distant from each other. How many yards must a person walk, who undertakes to pick them up, and place them in a basket stationed one yard from the first stone?
To collect the stones, the person must walk 1 yard to pick up the first stone, and then they had to double the distance each time - 2 yards, 4 yards, 8 yards etc.
To find the answer we multiply 202 by 50 = 10,100 yards.
I am a fruit. If you had two of me, I would sound just the same. If you rearrange my letters, it could be a crime. Add me to a montage and I can become a different fruit. Remove my head and you can still listen; take away the end and I can still be eaten. Without a piece of the center, I am still a word; take away all
of the middle and I am just an acronym. What am I?
If we look at the green bar we see that its real height is 2/3 of its shadow. So that means we need to find 2 shadows length for the red bar, the uninterruped part and the one on the wall. Since we now know the formula for the floor shadow - real height is 2/3 of it - meaning the part that makes that shadow is 4 meters long. Then we have to add the part on the wall which is straight up, it has no formula so we just add those 4 meters on the wall to the 4 meters we got from multiplying 2/3 by 6 meters and we have 4 meters + 4 meters = 8 meterss
You May Enter...
You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock.
What am I?