Examlex
How many permutations of 12345 are there that leave 3 in the third position but leave no other integer in its own position?
Q19: A pair of dice, each with the
Q23: A doughnut shop sells 20 kinds of
Q33: Applying the division algorithm with a =
Q38: Prove or disprove that the cashier's algorithm
Q45: <span class="ql-formula" data-value="f : \mathbf { Z
Q53: Solve the linear congruence 54x ≡ 12
Q66: If G(x) is the generating function for
Q68: If two trees have the same number
Q83: The vertex-chromatic number for <span
Q103: <span class="ql-formula" data-value="\text { If } a