exam Maths Puzzle Numerical Ability

I'm not really sure how to write this problem out. It is a complex rational expression that I need to try and solve. It reads:
x+1/x-1 + 1
___________

x+1/x-1 - 1 and the w

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exam Other Question

Help me SIMPLIFY this -please:

2/3 * x/6 * 3/2x 300 pennies are tossed into the air. Determine the probability of:

1) P(125 is less than or = X less than or = 170 tails)

2) If your co worker is willing to wager 10.00 on this, should I take the wager and why?