 | Charles Vyse - Arithmetic - 1806 - 342 pages
...Strokes do the Clocks of Venice (which go on to 24 o'Clock) strike in the Compass of a natural Day? (2) How many Strokes does the Hammer of a Clock strike in 12 Hours ? (3) The Length of my Garden is 94 Feet: now if Eggs be laid along the Pavement a Foot asunder, and... | |
 | Michael Walsh - Arithmetic - 1807 - 290 pages
...two extremes by the whole number of terms, the product is the total of all the terms. EXAMPLES. 1 . How many strokes does the hammer of a clock strike in 12 hours? 124-1 — !.? ;''"¡ 1 3 X 6=78 Ans. 2. A man buys 17 yards of cloth, and gave for the first yard 2i.... | |
 | Charles Vyse - Arithmetic - 1815 - 340 pages
...strokes do the clocks at Venice (which go on to 24 o'clock) strike in the compass of a natural day? (2) How many strokes does the hammer of a clock strike in 12 hours? (3) The length of a garden is 94 feet : now if eggs be laid along the pavement a foot asunder, and... | |
 | Thomas Keith - Arithmetic - 1822 - 354 pages
...the least term be 3, the greatest 108, and the number of terms 14, what is the sum of the terms? (3.) How many strokes does the hammer of a clock strike in 12 hours? (4.) If 100 stones be laid in a straight line, and exactly the space of a yard be left between one... | |
 | Thomas Dilworth - Arithmetic - 1825 - 218 pages
...of the extremes by the whole number of terms, the product is the total of all the terms. EXAMPLES. 1 How many Strokes does the Hammer of a Clock strike in 12 hours? Answer 78. 2 A merchant hath sold 100 yds. of superfine cloth, viz. the 1st yard for Is. the 3d 2s.... | |
 | Warren Colburn - Algebra - 1828 - 330 pages
...them being multiplied by the whole number of terms will give the whole sum : thus s = n(n_±l)- J 2 Hence, the sum of a series of numbers in progression...one half of the product of the number of terms by tlie, sum of the first and last terms. Example. How many strokes does the hammer of a clock strike... | |
 | Nathan Daboll - Arithmetic - 1829 - 252 pages
...required the sum of the series. 23+3— 2(J sum of the extremes. Then 26 x 11-^2=14:3 the Answer. 2. How many strokes does the hammer of a clock strike in 12 hours. Aits. 78. 3. A merchant sold 100 yards of cloth, viz. the first yard for 1 ct. the second for 2 cts.... | |
 | Michael Walsh - 1831 - 348 pages
...two extremes by the whole number of terms, the product is the total of all the terms. EXAMPLES. 1. How many strokes does the hammer of a clock strike in 12 hours ? 12 -f- 1 = 13 then 13 X 6 = 78. Ans. • 2. A man buys 17 yards of cloth, and gave for the first... | |
 | Thomas Conkling (W.) - Arithmetic - 1831 - 302 pages
...come to? Ans. 125i. The first term is 1, and the last, 4/. 1 9s. or 99s. proceed according w rule. 3. How many strokes does the hammer of a clock strike in 12 hours? ADS. 7S As the common difference is 1, the extremes are 1, and 12; for the clock strikes 1, at one... | |
 | Nathan Daboll - Arithmetic - 1831 - 246 pages
...; required the sum of the series. 23+3=26 sum of the extremes. Then 26 x 11 -1-2=143 the Answer. 2. How many strokes does the hammer of a clock strike in 12 hours. Ans. 78. 3. A merchant sold 100 yards of cloth, viz. the first yard for 1 ct. the second for 2 cts.... | |
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RULE. Multiply the sum of the two extremes by half the number of terms, or multiply... 
