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Hence, when the extremes and number of terms are given, to find the common difference, — Divide the difference of the extremes by the number of terms, less 1, and the quotient will be the common difference.
Practical and Mental Arithmetic: On a New Plan: in which Mental Arithmetic ... - Página 259
por Roswell Chamberlain Smith - 1861 - 280 páginas
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## Practical Arithmetic, by Induction and Analysis

Joseph Ray - 1857 - 336 páginas
...the number of terms less one, the quotient will be the com. diff. Hence, the Rule for Case II. — Divide the difference of the extremes by the number of terms less one; the quotient will be the com. diff. 2. The extremes are 3 and 300; the number of terms 10 : find...
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## Practical Arithmetic, Embracing the Science of Numbers and the Art of ...

John Fair Stoddard - 1868 - 380 páginas
...find the common difference. ANALYSIS.— Since a + (n— l)c=lc=1—a. Hence, the n— 1 Rule. — Divide the difference of the extremes by the number of terms less one. 1. The first term is 8, the last term 203, and the number of terms 40 ; what is the common difference...
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## New Practical Arithmetic in which the Science and Its Applications are ...

Henry Bartlett Maglathlin - 1869 - 324 páginas
...first term 3, we have 2 X 4, or the product of the common difference by the number of terms less one. Hence, to find the common difference, Divide the difference of the extremes by the number of terms less one. Also, to find the number of terms, Divide the difference of the extremes by the common difference,...
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## Common School Arithmetic: Combining the Elements of the Science with Their ...

John Homer French - 1869 - 335 páginas
...number of terms less 1 ; and add the product to the less extreme, or subtract it from the greater. H. To find the common difference. Divide the difference of the extremes by the number of terms less lt III. To find the number of terms. Divide the difference of the extremes by the common difference,...
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## New Practical Arithmetic in which the Science and Its Applications are ...

...first term 3, we have 2 X 4, or the product of the common difference by the number of terms less one. Hence, to find the common difference, Divide the difference of the extremes by the number of term* less one. Also, to find the number of terms, Divide the difference of the extremes by the common...
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## Introduction to the National Arithmetic on the Inductive System: Combining ...

Benjamin Greenleaf - 1871 - 330 páginas
...number of common differences, 9, the quotient, 3, will be the common difference. Hence the RULE. — Divide the difference of the extremes by the number of terms less one, and the quotient will be the common difference. . EXAMPLES FOR PRACTICE. 1. The extremes of a...
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## A Practical Arithmetic: Upon the Basis of the Works of Geo. R. Perkins

George Payn Quackenbos - 1872 - 336 páginas
...less 1. Hence the following rules : — RULE II. — The extremes and number of terms being given, to find, the common difference, divide the difference of the extremes by the number of terms less 1. RULE III. — The extremes and common difference being given, to find the number of terms, divide the...
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## New Practical Arithmetic: In which the Science and Its Applications are ...

Henry Bartlett Maglathlin - 1873 - 336 páginas
...first term 3, we have 2 X 4, or the product of the common difference by the number of terms less one. Hence, to find the common difference, Divide the difference of the extremes by the number of terms less one. Also, to find the number of terms, Divide the difference of the extremes by the common difference,...
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## The Principles of Arithmetic ...

Joseph Ray - 1856
...ART. 412. To find the common difference, when the extremes and number of terms are known. RULE. — Divide the difference of the extremes by the number of terms less one. 1. Find the common difference of a series whose extremes are 8 and 28, and number of terms, 6....
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## The High School Arithmetic: Containig All the Matter Usually Presented in a ...

Philotus Dean - 1874 - 454 páginas
...it is plain that I — a = ± \n — Í) d, and d= ± ((I—a) -i- (n — 1)). Hence the Rule. — Divide the difference of the extremes by the number of terms less one. EXAMPLES FOR PRACTICE. 1. The first term is 2, the last term is 74, and the number of terms 25...
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