April 9, 2019
Problem of the Week
Tuesday, April 9, 2019
Necklace A below is comprised of 8 beads. If you start at any of the beads and consider the next two beads that follow in a clockwise direction, each of the 8 possible three-bead sequences of black and/or white beads is represented. Shade in exactly 8 black beads in necklace B leaving 8 beads white so that all 16 four-bead sequences are represented.
