MathematicsWhich of the following is the 10 th   term of the A.P., 5,8,11,14,…  ?

Which of the following is the 10 th   term of the A.P., 5,8,11,14,  ?


  1. A
    25
  2. B
    20
  3. C
    30
  4. D
    32 

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    Solution:

    Consider the given question,
    5,8,11,14,  
    Here,
    a=5 d=85 d=3  
    Calculating the value of a10;
    a n =a+(n1)d a 10 =a+(101)d a 10 =a+9d   Substituting the value of a and d,
    a 10 =5+9(3) a 10 =5+27 a 10 =32   Therefore, the 10th term of the A.P. is 32.
    Hence, option 4 is correct.
     
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