County: PROVIDENCE ; 2 Floors; Lot size: 28,314 Sq. Ft. Partial Basement; Heating; View More
The Least Common Multiple (LCM) of some numbers is the smallest number that the numbers are factors of. Like the LCM of 3 and 4 is 12, because 12 is the smallest number that 3 and 4 are both factors for. Type some numbers into the box to the right, and this page will find the LCM of those numbers. Type the integers here.
Sum of the Terms of an Arithmetic Sequence (Arithmetic Series). To find the sum of the first n terms of an arithmetic sequence use the formula, , where n is the number of terms, a 1 is the first term and an is the last term. Example 1: Find the sum of the first 20 terms of the arithmetic series if a 1 = 5 and a 20 = 62.Example 2: Find the sum of the first 40 terms of the arithmetic sequence. 2, 5, 8, 11, 14, ...um of the First n Terms of a Sequence. The sum of the terms of a sequence is called a series. If a sequence is arithmetic or geometric there are formulas to find the sum of the first n terms, denoted Sn, without actually adding all of the terms.