JEE Math Practice Question
If a1, a2, a3 ...... and b1, b2, b3 ....... are A.P., and a1 = 2, a10 = 3, a1b1 = 1 = a10b10, then a4 b4 is equal to -
- A.$${{35} \over {27}}$$
- B.1
- C.$${{27} \over {28}}$$
- D.$${{28} \over {27}}$$
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