What are the next three terms of the following sequence? -2, 4, -8, 16 Solution:- a1 = -2, and r = -2 an = a1* So the next…
Category: Discrete Mathematics
Problem 592
What are the next three terms of the following sequence? 8, 40, 200, 1000 Solution:- a1 = 8, and r = 5 an = a1* So the next…
Problem 591
Find S20 for the series -1 + -3 + -5 + -7 +… Solution:- a1 = -1, d = -2 S20 = [2*a1 + (n-1)*d] S20 = [2*(-1) + (20-1)*-2] S20 =…
Problem 589
Find the 10th term of an arithmetic sequence if t1 = 2.1 and t4 = 1.83. Solution:- 1.83 = 2.1+(4-1)d d = -0.09 n10th = 2.1+(10-1)*(-0.09) n10th = 1.29
Problem 588
Find S20 for the arithmetic series 8 + 16 + 24 + 32 +… Solution:- a1 = 8, d =8 S20 = n/2[2*a1 + (n-1)*d] S20 = 20/2[2*8 + (20-1)*8]…
Recent Comments