Question

11 The 20 term of an AP : -10,-5,0,5...
Is :
(a) 55 (b)85 (cl 65 (0) 75​

Answer 1

Answer:

100

Step-by-step explanation:

a= -10

d= -5-(-10)

d=5

20th term

AP= a+(n-1)d

5+(20-1)5

5+95

=100

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Answer 2

Step-by-step explanation:

Here first term = -10

second term = -5

common difference = -5-(-10) = -5+10 =5

20th term of AP = first term +19(common difference)

= -10+19(5)

= -10+95 = 85