Mathematics

If 70, 75, 80, 85 are the first four terms of an arithmetic progression, then the 10th term is:
35
25
115
105

AP

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Answer

The given Arithmetic Progression (A.P.) is

70, 75, 80, 85, ….

a = 70

d = 75 - 70 = 5

n = 10

We know that,

nth term of A.P. :

∴ T_n = a + (n - 1)d

⇒ T₁₀ = 70 + (10 - 1)5

= 70 + (9)5

= 70 + 45

= 115.

Hence, option 3 is the correct option.

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Related Questions

The first term of an A.P. is 7 and the common difference is 3. The general term of the A.P. is:
T_n = 3n − 4
T_n = 2n + 5
T_n = 3n + 4
None of these
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