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Then the Theorem will be 13 × n—w +r=x, the Number of Spots required.

(4) Suppose a Pack of Cards dealt into be seven Heaps, and then there are 12 Cards left out. Quere, the Number of Spots on all the bottom Cards?

(5) What Dimensions must I give to a Joiner to make a Cubical Box that will hold 2000 Oranges of 24 Inches Diameter each, supposing the Oranges globular, keeping that Form, and laid in Rows exactly at the Top of each other? Ans. 31,498 Inches inside. (6) A Master joiner gives to one of his Men a Plank that is 10 Feet by 2, with Orders to make of it a Square Table, equal in Area to the said Plank, but not to exceed five Segments: the poor Man being ignorant of Lines (and not willing his Master should know it,) would be greatly obliged to any one who will draw the Plan how the said Plank must be cut and applied together.

(7) A Person being asked what Hour of the Day it was, answered, it is between 5 and 6, and both the Minute Hand and Hour Hand are together. Required the Hour of the Day?

(8) A Lady has a Dressing-Table, each Side of which is 27 Inches but she is desirious to know how each Side of the same may=36 Inches, by having 4 Feet of Plank, Superficial Measure, joined to the same. The Plan in what Manner the Plank must be cut and applied to the Table is required?

(9) A Gentleman purchases a Piece of Land in

Form of a Parallelogram, and incloses one
fourth Part (as per Figure) to build a
House and other Conveniences upon: now
he desires the Remainder of this Land may
be divided into four Parts, equal and similar
to each other, to be appropriated to such

Uses as he shall hereafter think proper. The Plan is
desired?

(10) Required to divide a given Trapezium, of two equal Parts (geometrically), by the shortest Line possible? (11) A Person, for a considerable Wager, is to travel from a Town A. to another B. but he is to call at a Place which is somewhere on the Line a b. Now his Time limited being very short, he is desirous to know (by

Geometry) the Situation of the Place on the Line a b, the Distance from thence toA. and B. being the shortest possible?

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(12) All the different Ways possible in which a Gentleman can place his Servants, combining them by 1, 2, 3, &c. at a Time, are 960799. What Number of Servants does he keep?

GENEALOGICAL PARADOXES.

(1) Suppose two Women, and each a Son, were walking together, and were met by another Person, who asked the Boys in what Relation they stood to each other? They replied, We are Sons and Grandsons by the Fathers; Brothers and first Cousins by the Mothers; who also are Aunts to each of us. This Combination of Kindred once happened, but in what Manner? See Gen. xix. ver. 31.

(2) Who was he that was begot before his Father, born before his Mother, and had the Maidenhead of his Grand

mother?

APPENDIX.

2 D

APPENDIX,

CONTAINING

Various Forms of Acquittances, Promissory Notes, Bills of Exchange, Letters of Advice, Letters of Credit, Bills of Parcels, and Bills on Book Debts, all of which are adapted to fuch Circumstances as occur in real Business, to enter a Pupil in the Manner and Method of Commerce, and to make him ready at Computation.

R

A general Receipt.

ECEIVED, August 9th, 1803, of Mr. Anthony Buskin, the Sum of Fifty Pounds, in full for one Quarter's Rent, due at Midsummer last, and of all Demands,

£. 50 00 00

By me, HENRY HEDGES.

A Receipt or Acquittance for Rent paid.

RECEIVED, this 5th Day of January, 1803, of Mr. Thomas Field, the Sum of Thirty-one Pounds Sixteen Shillings, in Money, which, with Eight Pounds Four Shillings, more, disbursed by the said Thomas Field, for Taxes and Reparations of the Messuage and Tenements he now occupies, situate in Chiswell-Street, London, makes in the Whole the Sum of Forty Pounds, and is in full of Half a Year's Res

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