Personal banker interview questions shared by candidates
Rabbit is playing on a ladder with 10 rungs. Rabbit can take a step of 1 or jump 2 steps at a time. How many different ways can it get from the bottom to the top?
thats 6 right?
its permutation! 10 rungs and 2 possible ways( 1 step/2 jumps) The rabbit can jump only one at a time or a in a mixed steps of 1 and 2 n!/(n-r)! = 10!/(10-2)!= 10!/8! = (10x9x8!)/8! = 10x9 =90
these answers are bull plop. it's fibonacci. condition on the size of the first jump and it's pretty obvious that f(n) = f(n-1) + f(n-2) with boundary conditions f(1) = 1, f(2) = 2. So f(10) is the 11th Fibonacci number which is 89.
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