what is the 5th term of the given sequence 1,3,6,10,15,21,23?

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  • Anonymous
    3 weeks ago

    What do you mean by the 5th term?

  • 3 weeks ago

    The 5th term is 15...........//

  • 3 weeks ago

    This appears to be the sequence of triangular numbers with a typo of 23 (should probably be 28).

    To find the 5th term, just count over.

    1st term = 1

    2nd term = 3

    3rd term = 6

    4th term = 10

    5th term = 15 <--

    If you add up the first n counting numbers, notice what you get:

    1 = 1

    1+2 = 3

    1+2+3 = 6

    1+2+3+4 = 10

    1+2+3+4+5 = 15 <--

    If we continue the pattern, we see you seem to have a mistake:

    1+2+3+4+5+6 = 21

    1+2+3+4+5+6+7 = 28

    Answer:

    The 5th term is clearly 15.

    P.S. In some contexts, books will start at a "zeroth" term. But since that isn't stated explicitly, it's probably safe to assume that the first number in your list is the *first* term, not the zeroth term.

  • 3 weeks ago

    The 5th term is 15.

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  • 3 weeks ago

    It's 21 because most sequences start at 0 which is the zeroth term of the sequence.

  • 3 weeks ago

    Answer is 15 or 15 or 15 or 15...

  • David
    Lv 7
    3 weeks ago

    The 5th term is 15 and the 7th term should be 28

  • 3 weeks ago

    The fifth term is 15

  • Matt
    Lv 7
    3 weeks ago

    agree with LE Gant - are you sure that the last term is 23 not 28?

  • 3 weeks ago

    1 is the first term

    3 is the second term

    6 is the third term....

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