No. LXXV.—THE SEAL OF MAHOMET
This double crescent may be drawn by one continuous line, without passing twice over any part, by starting at A, passing along the curve AGD, from D along DEB, from B along BFC, and from C along CEA.
No. LXXVI.—MOVE THE MATCHES
If fifteen matches are arranged thus—
and six are removed, ten is the number that remains, thus—
