General
Easy
Maths-

If n is even, S subscript n equals 1 squared plus 2.2 squared plus 3 squared plus 2.4 squared plus 5 squared plus 2.6 squared horizontal ellipsis n terms equals fraction numerator n left parenthesis n plus 1 right parenthesis squared over denominator 2 end fraction, if straight n is odd then S subscript n equals

Maths-General

  1. fraction numerator n left parenthesis n plus 1 right parenthesis squared over denominator 4 end fraction
  2. fraction numerator n squared left parenthesis n plus 1 right parenthesis over denominator 2 end fraction
  3. fraction numerator 3 n left parenthesis n plus 1 right parenthesis over denominator 2 end fraction
  4. fraction numerator n squared left parenthesis n plus 1 right parenthesis squared over denominator 4 end fraction

    Answer:The correct answer is: fraction numerator n squared left parenthesis n plus 1 right parenthesis over denominator 2 end fraction

    Book A Free Demo

    +91

    Grade

    Related Questions to study

    General
    maths-

    If S subscript 1 equals left curly bracket 1 right curly bracket comma S subscript 2 equals left curly bracket 2 comma 4 right curly bracket comma S subscript 3 equals left curly bracket 3 comma 6 comma 9 right curly bracket S subscript 4 equals left curly bracket 4 comma 8 comma 12 comma 16 right curly bracket comma horizontal ellipsis horizontal ellipsis

    then sum of the numbers in the set  is

    If S subscript 1 equals left curly bracket 1 right curly bracket comma S subscript 2 equals left curly bracket 2 comma 4 right curly bracket comma S subscript 3 equals left curly bracket 3 comma 6 comma 9 right curly bracket S subscript 4 equals left curly bracket 4 comma 8 comma 12 comma 16 right curly bracket comma horizontal ellipsis horizontal ellipsis

    then sum of the numbers in the set  is

    maths-General
    General
    maths-

    The sets S subscript 1 comma S subscript 2 comma S subscript 3 comma horizontal ellipsis horizontal ellipsis are given byS subscript 1 equals open parentheses 2 over 1 close parentheses comma S subscript 2 equals open parentheses 3 over 2 comma 7 over 2 close parentheses comma S subscript 3 equals open parentheses 4 over 3 comma 9 over 3 comma 14 over 3 close parentheses S subscript 4 equals open parentheses 5 over 4 comma 11 over 4 comma 17 over 4 comma 23 over 4 close parentheses horizontal ellipsis horizontal ellipsis then the sum of numbers in the set S subscript 20 is :

    The sets S subscript 1 comma S subscript 2 comma S subscript 3 comma horizontal ellipsis horizontal ellipsis are given byS subscript 1 equals open parentheses 2 over 1 close parentheses comma S subscript 2 equals open parentheses 3 over 2 comma 7 over 2 close parentheses comma S subscript 3 equals open parentheses 4 over 3 comma 9 over 3 comma 14 over 3 close parentheses S subscript 4 equals open parentheses 5 over 4 comma 11 over 4 comma 17 over 4 comma 23 over 4 close parentheses horizontal ellipsis horizontal ellipsis then the sum of numbers in the set S subscript 20 is :

    maths-General
    General
    maths-

    The greatest positive integer which divide left parenthesis n plus 2 right parenthesis left parenthesis n plus 3 right parenthesis left parenthesis n plus 4 right parenthesis left parenthesis n plus 5 right parenthesis left parenthesis n plus 6 right parenthesis text  if  end text n element of N is

    The greatest positive integer which divide left parenthesis n plus 2 right parenthesis left parenthesis n plus 3 right parenthesis left parenthesis n plus 4 right parenthesis left parenthesis n plus 5 right parenthesis left parenthesis n plus 6 right parenthesis text  if  end text n element of N is

    maths-General
    General
    physics

    Which from the following is a scalar ?

    Which from the following is a scalar ?

    physicsGeneral
    General
    physics

    Error converting from MathML to accessible text.and Error converting from MathML to accessible text.are equal vectors what from the followings is true

    Error converting from MathML to accessible text.and Error converting from MathML to accessible text.are equal vectors what from the followings is true

    physicsGeneral
    General
    physics

    straight P with rightwards arrow on top = Error converting from MathML to accessible text. is true, if

    straight P with rightwards arrow on top = Error converting from MathML to accessible text. is true, if

    physicsGeneral
    General
    biology

    Central Rice Research Institute (CRRI) is situated at

    Central Rice Research Institute (CRRI) is situated at

    biologyGeneral
    General
    physics

    A with not stretchy rightwards arrow on top and Error converting from MathML to accessible text. are in opposite direction so they are

    A with not stretchy rightwards arrow on top and Error converting from MathML to accessible text. are in opposite direction so they are

    physicsGeneral
    General
    physics

    straight A with rightwards arrow on top equals1+2j+2k, calculate the angle between A with not stretchy rightwards arrow on top and Y axis

    straight A with rightwards arrow on top equals1+2j+2k, calculate the angle between A with not stretchy rightwards arrow on top and Y axis

    physicsGeneral
    General
    physics

    A and straight B with rightwards arrow on top are nonzero vectors. Which from the followings is true?

    A and straight B with rightwards arrow on top are nonzero vectors. Which from the followings is true?

    physicsGeneral
    General
    physics

    straight C with rightwards arrow on top equals straight A with rightwards arrow on top plus straight B with rightwards arrow on top and A=B=C Find the angle between A with not stretchy rightwards arrow on top and Error converting from MathML to accessible text.

    straight C with rightwards arrow on top equals straight A with rightwards arrow on top plus straight B with rightwards arrow on top and A=B=C Find the angle between A with not stretchy rightwards arrow on top and Error converting from MathML to accessible text.

    physicsGeneral
    General
    physics

    The resultant of two vectors is maximum when they

    The resultant of two vectors is maximum when they

    physicsGeneral
    General
    maths-

    If P space left parenthesis n right parenthesis is a statement left parenthesis n element of N right parenthesis such that if P space left parenthesis k right parenthesis is true, P space left parenthesis k plus 1 right parenthesis is true for k element of N, then P space left parenthesis n right parenthesis is true.

    If P space left parenthesis n right parenthesis is a statement left parenthesis n element of N right parenthesis such that if P space left parenthesis k right parenthesis is true, P space left parenthesis k plus 1 right parenthesis is true for k element of N, then P space left parenthesis n right parenthesis is true.

    maths-General
    General
    maths-

    Let P space left parenthesis n right parenthesis colon n squared plus n plus 1 is an even integer. If P space left parenthesis k right parenthesis is assumed truc rightwards double arrow P space left parenthesis k plus 1 right parenthesis is truc. Thercforc P left parenthesis n right parenthesis is true :

    Let P space left parenthesis n right parenthesis colon n squared plus n plus 1 is an even integer. If P space left parenthesis k right parenthesis is assumed truc rightwards double arrow P space left parenthesis k plus 1 right parenthesis is truc. Thercforc P left parenthesis n right parenthesis is true :

    maths-General
    General
    physics

    The resultant of two vetoers A with not stretchy rightwards arrow on top and B with not stretchy bar on top

    The resultant of two vetoers A with not stretchy rightwards arrow on top and B with not stretchy bar on top

    physicsGeneral