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I 2,4,6,8, &c. is an ascending arithmetical series : o ( 8,6,4,2, &c. is a descending arithmetical series : The numbers which form the series, are called the terms of the progression ; the first and last terms of which aro called the extremes.* PROBLEM...
Daboll's Schoolmaster's Assistant: Improved and Enlarged, Being a Plain ... - Σελίδα 178
των Nathan Daboll - 1831 - 240 σελίδες
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## The Complete Practical Arithmetician: Containing Several New and Useful ...

Thomas Keith - 1822 - 332 σελίδες
...progression ; such as, 2, 4, 6, 8, 10, &c. ; or 15, 14, 13, 12, 11, &c. and the numbers which form such series are called the terms of the progression. The first and last terms are usually called the extremes. Note 1. If three numbers be in arithmetical progression) the sum of...

## A New and Concise System of Arithmetick: Containing Vulgar, Decimal, and ...

Beriah Stevens - 1822 - 423 σελίδες
...the second decreasing (or descending) by the continual subtraction of seven ; and so of a ny other. The numbers which form the series are called the terms of the progression. NOTE. — The first and last terms of a progression are called the extremes, and the other terms the...

## A New and Complete System of Arithmetick: Composed for the Use of the ...

Nicolas Pike - 1822 - 532 σελίδες
...2. The last term. 3. The number of terms. 4. The common difference. 5. The fiim of all the terms. ^ PROBLEM I. The first term, the last term, and the number of terms being given, t» find the common difference. ROLE* Divide the difference of the extremes by the...

## Daboll's Schoolmaster's Assistant, Improved and Enlarged

Nathan Daboll - 1825 - 240 σελίδες
...asce:ulhig arithmetical series : ¿ 8. 6. 4. 2, &c. is a descending arithmetical seu'es : The ma'.íbers which form the series, are called the terms of the progression ; the first and last terms of wlach are called the extremes.* PROBLEM I. Tbc first term, the last term, and the number ot terras...

## Daboll's Schoolmaster's Assistant

Nathan Daboll - 1825 - 240 σελίδες
...series,: ^ 8, 6, 4, 2, &c. is a descending arithmetical series : The numbers which form the secies, are called the terms of the progression ; the first and last terms of which, are caller'• the extremes.* PROBLEM I. The first term, the last term, and the number of terms being...

## The Youth's Assistant in Theoretick and Practical Arithmetic

Zadock Thompson - 1826 - 164 σελίδες
...first term, the last term, the number of terms, the common difference, and the sum of all the terms. Problem I. The first term, the last term, and the number of terms given, to find the sum of all the terms. RULE.* — Multiply the sum of the extremes by the number...

## Daboll's Schoolmaster's Assistant

Nathan Daboll - 1828 - 247 σελίδες
...Arithmetical Progression. So \$ 2' 4' ^'' **i• ^c- is an ascending arithmetical series : I 8i 6- 4, 2, &c. is a descending arithmetical series : The numbers...terms of the progression ; the first and last terms of whic'.i are called the extremes.* PROBLEM I. . . The first term, the last term, and the number of terms...

## Daboll's Schoolmaster's Assistant: Improved and Enlarged. Being a Plain ...

Nathan Daboll - 1828 - 247 σελίδες
...in Arithmetical Progression. o ^ 2, 4, 6, 8, &c. is an ascending arithmetical series : ^ 8, 6. 4, 2, &,c. is a descending arithmetical series : The numbers...which form the series, are called the terms of the prligression ; the first and last terms of which are called the extremes.* PROBLEM I. TV, firsl term,...

## Daboll's Schoolmaster's Assistant: Improved and Enlarged. Being a Plain ...

Nathan Daboll - 1828 - 240 σελίδες
...arithmetical series : ( 8,6,4,2, &.c. is a descending arithmetical series : The numbers which fojrm the series, are called the terms of the progression ; the first and last terms' of which are called the extremes.* PROBLEM I. The first term, the last term, and the number of terms being given,...

## Adams's New Arithmetic: Arithmetic, in which the Principles of Operating by ...

Daniel Adams - 1828 - 264 σελίδες
...\$ 3, 5, 7, 9, 11, 13, 15, &c. is an ascending series. ( 15, 13, 11, 9, 7, 5, 3, &c. is a descending series. The numbers which form the series are called the terms of the series. The first and last terms are the extremes, and the other terms are called the means. There...