ЁЯУв Too many exams? DonтАЩt know which one suits you best? Book Your Free Expert ЁЯСЙ call Now!

    Question

    The number of terms in the sequence 20, 25, 30,

    ….., 160 is:
    A 22 Correct Answer Incorrect Answer
    B 29 Correct Answer Incorrect Answer
    C 23 Correct Answer Incorrect Answer
    D 26 Correct Answer Incorrect Answer

    Solution

    Formula used: l = a + (n – 1)d Here, l = last term a = first term n = number of terms d = difference between two term (t – t ) Accordint to question, => d = t2 – t1 = 25 – 20 = 5 Let the number of terms be n. ⇒ 160 = 20 + (n – 1)5 ⇒ 140 = (n – 1)5 ⇒ n = 29 ∴ Number of terms = 29

    Practice Next
    More Series Questions

    Relevant for Exams:

    ask-question