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· started a discussion

· 1 Months ago

vlue put se q ni aa rha ans (Question: 382399.0 )

if we are taken 1,2,3 in AP and 2,4,8 ........in GP that why not come ans..

Question:

If a, b, c are in A.P. and x, y, z are in G.P. then x(b – c).y(c – a).z(a – b) is

Options:
A)

0

B)

–1

C)

1

D)

2

Solution:

Ans: (c)

  

Knowledge Expert

· commented

· 1 Months ago

Dear Student,

If we take the values of a =1, b=2, c=3 and X=2 y=4 z=8 we put all values in given expression we get
2^(2-3) . 2^(3-1). 2^(1-2) we get 2^(-1). 2^(2).2^(-1) base is common thus 2^(-1+2-1). 2^(-2+2)= 2^(0)= 1

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