Formula to find the number of terms in an arithmetic sequence : Substitute l = 10/3, t1 = -1 and d = 1/6. Example 3 : Using arithmetic sequence, find the number of all three-digit numbers

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An Arithmetic sequence is a list of number with a constant difference. There, to find the difference, you only need to subtract the first term from the second term, assuming the two

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(1) The first three successive terms are 41, a, 55. Write the rule for the middle term of the three successive terms of (2) Identify the variables. x =41; y=a; z =55 (3) Substitute the values of x

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The sum of the first n terms of an arithmetic sequence (arithmetic series) with the first term 'a' and common difference 'd' is denoted by Sₙ and we have two formulas to find it. S n = n/2[2a +

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