7th Class Mathematics Algebraic Expressions Question Bank Algebraic Expressions

  • question_answer
    What is the expression related to the pattern 7, 11, 15, ........?

    A) \[2n-1~\]                      

    B) \[4n+3~\]

    C) \[4n+1\]                       

    D) \[{{n}^{2}}-1\]

    Correct Answer: B

    Solution :

    (b) These problems are solved by observations. \[{{T}_{1}}=7,{{T}_{2}}=11,{{T}_{3}}=15\Rightarrow \]Regular difference of 4. For \[n=1:\] \[{{T}_{1}}=4\times 1+3=7,\,{{T}_{2}}=4\times 2+3=11\] and so on.


You need to login to perform this action.
You will be redirected in 3 sec spinner