Q. 195.0( 2 Votes )
4th term in (x - 2y)12 = T4 = T3 + 1
= 12C3(x)12 - 3(-2y)3
[Tr + 1 in (a + b)n = nCr an – r br]
= 12C3(x)9 (-2)3 (y)3
= -1760 x9 y3
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