 | Charles Vyse - Arithmetic - 1785 - 350 pages
...the Number of Terms, and divide the Product by 2. The Quotient will be the Sum of all the Series, or multiply the Sum of the two Extremes by Half the Number of Term*. EXAMPLES. 1. How many Strokes do the Clocks at Venice (which go on to 24 o'Clock) ftrike in... | |
 | William Taylor (teacher of the mathematics.) - Arithmetic - 1800 - 556 pages
...and the number of terms aie given, to find the fum of all the feries or terms, RULE. Multiply the fum of the two extremes by half the number of terms, or multiply the fum of the two extremes into the number of terms, and divide the produit by г ; the quotient will... | |
 | Michael Walsh - Arithmetic - 1801 - 268 pages
...other two may be found. The ßrfl. Jccond and third term given toßnd theßfth. RULE. Multiply the fum of the two extremes by half the number of terms, or multiply half the fum of the two extremes by the whole number of terms, the produä is the total of all the terms. EXAMPLES.... | |
 | Charles Vyse - Arithmetic - 1806 - 342 pages
...Number •f Terms, and divide the Product by 2. The Quotient will be the Sum of all the Series. Or multiply the Sum of the two Extremes by Half the Number of Terms. EXAMPLES. * (1) How many Strokes do the Clocks of Venice (which go on to 24 o'Clock) strike in the... | |
 | Michael Walsh - Arithmetic - 1807 - 290 pages
...being given, the other two may be found. Theßrst, second and third terms given toßnd thcßfth. RULE. Multiply the sum of the two extremes by half the number of terms, or multiply half the sum of the two extremes by the whole number of terms, the product is the total of all the terms. EXAMPLES. 1 .... | |
 | Michael Walsh - Arithmetic - 1816 - 288 pages
...Multiply the sum of the two extremes by half the number of terms, or multiply half the sum of the two extremes by the whole number of terms, the product...many strokes does the hammer of a clock strike in 1 2 hours ? 12 + 1=13 then 13X6—78 Ans. 2. A man buys 17 yards of cloth, and gave fer the first yard... | |
 | Daniel Staniford - Arithmetic - 1818 - 332 pages
...PROPORTION II. The two extremes and the number of terms being given, to find the sum of all the terms. RULE. Multiply the sum of the two extremes by half the number of terms, the prodnct will be the sum of all the terms. EXAMPLES. :}. What is the sum of an Arithmctical Progression,... | |
 | Silvestre François Lacroix - Arithmetic - 1825 - 394 pages
...wJutle progression. Or, which amounts to the same, multiply the sum of tlie first and the last term by half the number of terms. Or, multiply half the sum of the first and the last term by the whole number of terms. Each of these enunciations of tlie rule will... | |
 | Silvestre François Lacroix - Arithmetic - 1825 - 404 pages
...the whole progression. Or, which amounts to the same, multiply the sum of the first and the last term by half the number of terms. Or, multiply half the sum of the first and the last term by the whole number of terms. Each of these enunciations of the rule will give... | |
 | Michael Walsh - Arithmetic - 1828 - 312 pages
...two may be found. Thejiril, second and third term given, to find the. fifth. RULE. Multiply the sura of the two extremes by half the number of terms, or multiply half the sum of the two extremes by the whole number of terms, the product is the total of all the terms. EXAMPLES. 1.... | |
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RULE. Multiply the sum of the two extremes by half the number of terms, or multiply half the sum of the two extremes by the whole number of terms, the product is the total of all the terms. 
