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  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2002

  • question_answer
    If\[a,b,c,d,e\]are in AP, then the value of\[a-4b+6c-4d+e\]is equal to

    A)  1                 

    B)  2

    C)  0                

    D)  None of these

    Correct Answer: C

    Solution :

     a, b, c, d, e are in AP. \[\therefore \] \[2b=a+c,2c=b+d,2d=c+e,\] \[a-4b+6c-4d+e\] \[=a-4b+6c-2c-2e+e\] \[=a-4b+4c-e\] \[=a-4b+2b+2d-e\] \[=a-2b+2d-e\] \[=a-a-c+c+e-e\] \[=0\]


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