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The term independent of x in the expansion of 10 2 / 1 3 / 1 3 / 2 ) x x ( ) 1 x ( ) x 1 x ( ) 1 x ( ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ − − − − + + , x > 1, is :

1. 120
2. 240
3. 210
4. 150

Correct answer: 210

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