The Incredible Hulk can double the distance he jumps with each succeeding jump.If the first jump is 1 meter,the second jump is 2 meters,the third jump is 4 meters,and so on,then on which jump will he first be able to jump more than 1 kilometer
The eleventh jump.......
2n-1 gives the distance on the nth jump.....and we want to know this :
2n-1 > 1000
And.....
210 = 1024.......so.....
211-1 = 210 > 1000
And n = 11