 | James E. Ryan - 1877 - 212 páginas
...number of terms. (20— 2)-f-3+l=7. The common difference equals the quotient obtained by dividing the difference of the extremes by the number of terms less 1 (l—a)-~-(n— 1). Example. The difference of the extremes is 24, the number of terms is 13; then... | |
 | William Frothingham Bradbury - 1882 - 416 páginas
...divided by 3 (15 -=-3 = 5) gives one of these additions, that is the common difference. Hence, Rule. Divide the difference of the extremes by the number of terms less one. 91. The extremes of an arithmetical series are 4 and 55, and the number of terms is 18 ; what... | |
 | Horatio Nelson Robinson - 1875 - 472 páginas
...the common difference multiplied by the number of teTms less 1, (677)> we have the following RULE. Divide the difference of the extremes by the number of terms less 1 EXAMPLES FOR PRACTICE. 1. If the extremes of an arithmetical series are 3 and 15, and the number of... | |
 | James Bates Thomson - 1882 - 450 páginas
...less 1 ; therefore 18-i-9, or 2, is the common difference required. (Art. 764.) Hence, the RULE. — Divide the difference of the extremes by the number of terms less 1. FOEMULA. .-rf, = j !=« 2. The ages of 10 children form an arithmetical series ; the youngest is 3... | |
 | James Bates Thomson - 1882 - 416 páginas
...1; therefore 18-5-9, or 2, is the common difference required. (Art. 764.) Hence, the RULE.—Divide the difference of the extremes by the number of terms less 1. 2. The age» of 10 children form an arithmetical series; the youngest is 3 yr. and the eldest 30 years;... | |
 | Christian Brothers - 1888 - 484 páginas
...difference between the first and the last term, divided by the number of terms less 1. RULE. — To find the common difference, divide the difference of the. extremes by the number of terms less one. W RITTE N EXERCISES. 2. If the number of terms is 30, the first term 13, and the last term 129,... | |
 | Horatio Nelson Robinson - 1892 - 428 páginas
...divide the difference between 2 and 23, 21, by 8 — 1 = 7, and find the common difference 3. RULE. — Divide the difference of the extremes by the number of terms less 1. 2. The first term is 2, the last term is 17, and the number of terms is 6. What is the common difference... | |
 | Horatio Nelson Robinson - 1892 - 428 páginas
...divide the difference between 2 and 23, 21, by 8 — 1 = 7, and find the common difference 3. RULE. — Divide the difference of the extremes by the number of terms less 1. 2. The first term is 2, the last term is 17, and the number of terms is 6. What is the common difference... | |
 | Henry B. Maglathlin - 1894 - 370 páginas
...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 ly the common differ'... | |
 | William Frothingham Bradbury - 1895 - 398 páginas
...difference divided by3(15n-3 = 5) gives one of these additions, that is the common difference. Hence, Bule. Divide the difference of the extremes by the number of -terms less one. 91. The extremes of an arithmetical series are 4 and 55, and the number of terms is 1 8 ; what... | |
| |
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. 
