It is not possible to answer this question without information on whether the terms are of an arithmetic or geometric (or other) progression, and what the starting term is.
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∙ 14y agoYou.... have to apply this formula! n(n+1)/2 and n is the no. of terms
Find the Sum to n terms of the series 5 5+55+555+ +n Terms
n*(n+1)
There is no formula that will sum n even numbers without further qualifications: for example, n even numbers in a sequence.
200, 20, 2, 0.2 Here you have 4 terms. Add them together, and you find the sum of these four terms. If you need to find the sum of some other terms, i.e 8 terms, then you can use the formula Sn = [a1(r^n - 1/(r - 1) where n = 8, a1 = 200, and r = 1/10.
You.... have to apply this formula! n(n+1)/2 and n is the no. of terms
The formula to find the sum of a geometric sequence is adding a + ar + ar2 + ar3 + ar4. The sum, to n terms, is given byS(n) = a*(1 - r^n)/(1 - r) or, equivalently, a*(r^n - 1)/(r - 1)
The formula for the sum of the first n terms of an arithmetic progression is Sn = n/2 * (a + l), where Sn is the sum, n is the number of terms, a is the first term, and l is the last term.
Sum of 1st 2 terms, A2 = 2 + 4 = 6 Sum of 1st 3 terms, A3 = 2 + 4 + 6 = 12 Sum of 1st 4 terms A4 = 2 + 4 + 6 + 12 = 20 you can create a formula for the sum of the 1st n terms of this sequence Sum of 1st n terms of this sequence = n2 + n so the sum of the first 48 terms of the sequence is 482 + 48 = 2352
The sum of n terms in a harmonic progression is given by the formula ( S_n = \frac{n}{a_1+ \frac{ (n-1)d}{2}} ) where ( S_n ) is the sum of n terms, ( a_1 ) is the first term, d is the common difference.
Find the Sum to n terms of the series 5 5+55+555+ +n Terms
n*(n+1)
There is no formula that will sum n even numbers without further qualifications: for example, n even numbers in a sequence.
The formula to find the sum of interior angles of a polygon is 180° × (n - 2), where n is the number of sides of the polygon.
RAMANUJANRAMANUJAN
The formula is (n-2)x180 over n =x
The formula is sum of interior angles = (n - 2)*pi radiansor (n - 2)*180 degrees.