What is the description of the pattern in the sequence 3 4 6 9 13?

Answer: The next number in the given sequence 3, 4, 6, 9, 13, 18, 24 is 31.

What is the sum of first 20 terms of an AP if a 4 and t20 36?

Here a ( n ) = a + ( n – 1 ) d = last term = a ( 20 ) Sum = 20/2 ( 4 + 36 ) = 10 ( 40 ) = 400. Sum of the first 20 terms is 400 .

What is the sum of the first 21 terms of the series?

Answer: The sum of the first 21 terms of the series −5 + (−3) + (−1) + 1 + is 315.

What is the sum of upto 20 terms?

Answer: The sum upto 20 terms of the series is 3250.

What is the next value 4 D 7 G 10 J 13?

The third term is 7, the 7th alphabet is g. It is the number and that count of alphabets. Hence, the 13th alphabet is m. So, the next term would be m.

What are the next two numbers in the sequence 8 4 2?

Algebra Examples This is the form of a geometric sequence. Substitute in the values of a1=16 a 1 = 16 and r=12 r = 1 2 . Apply the product rule to 12 1 2 . One to any power is one.

What is the sum of the first 20 terms of an AP if first term is 4 and 25th term is 36?

Hence, the sum of first 20 terms is 740.

What is the sum of the first 20 terms of an AP if a 4 and t20?

28 is divided into four parts in A.P. so that ratio of the product of first and third with the product of second and fourth is 8:15,then the sum of these parts is.

What is the sum of the first 200 natural numbers?

Number of terms is also 200. We know the sum of n terms of an AP can be written as Sn = n2(a + l). Hence, the answer to this question is 20100.

How do you find the sum of the first 20 terms?

To find the sum of the first n terms of an arithmetic sequence use the formula, S n = n ( a 1 + a 2) 2 , where n is the number of terms, a 1 is the first term and a n 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 . S 20 = 20 ( 5 + 62) 2 S 20 = 670.

What is the sum of the first 20 terms of arithmetic series?

The sum of the first n terms of an arithmetic sequence is called an arithmetic series . Example 1: Find the sum of the first 20 terms of the arithmetic series if a 1 = 5 and a 20 = 62 .

How do you find the sum of the terms of a sequence?

Sum of the Terms of a Geometric Sequence (Geometric Series) To find the sum of the first n terms of a geometric sequence use the formula, S n = a 1 (1 − r n) 1 − r, r ≠ 1, where n is the number of terms, a 1 is the first term and r is the common ratio.

How do you find the first 8 terms of a geometric series?

First find a 1 and a 50 : Then find the sum: where n is the number of terms, a 1 is the first term and r is the common ratio . Find the sum of the first 8 terms of the geometric series if a 1 = 1 and r = 2 .