4. Two more than a certain number is 15 less
than twice the number.

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =