Sum all integers from 1 to 2^n
Number of paths on a grid
Fix the last element of a cell array
Back to basics - mean of corner elements of a matrix
Deriving a function using the difference quotient
Solve an ODE: separable equation
Count trailing zeros in a primorial
Guess the card in Fitch Cheney’s five-card trick
Determine whether a number is a prime self number
Determine whether a number is a cluster prime
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