How to an arithmetic progression (AP) is a sequence of numbers in which the difference between any two consecutive terms is always the same. Why it is not possible to determine the 11th term of the AP without additional information.
What is another way to identify an AP
Arithmetic Progressions Solutions for Class 10th Maths exams.
Choose the correct choice in the following and justify : 11th term of the AP: – 3, – 1/2, 2, . . . , is
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Here, a = – 3, d = – 1/2 (- 3) = 5/2 and n = 11.
Therefore, putting the values in a_n = a + (n -1)d, we get
a₁₁ = – 3 +(11 -1) (5/2)
⇒ a₁₁ = – 3 + 25 = 22
Hence, the option (B) is correct.