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If a1, a2, a3,... and b1, b2, b3,.... are A.P. and a1= 2, a10 = 3, a1 b1 = 1 = a10 b10 then a4 b4 is equal to 10.

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If a1, a2, a3,... and b1, b2, b3,.... are A.P. and a1 2, a10 = 3, a1 b1 = 1 = a10 b10 then a4 b4 is equal to 10.

(A) 35/27

(B) 1

(C) 27/28

(D) 28/27

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Correct option is (D) 28/27

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