It depends on what you're talking about. If it's your weight, then no, it's not much. However, if you plan on lifting 122.5 pound weights, then it is a bit much.
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1225 pounds = 87.5 stone
2/50 x 2/50= 4/2500= 1/625-------------------------If the first ticket won't be replaced after it has been drawn, then your chances are 2/50*1/49=2/2450=1/1225.
More than 140 rolls will be required if and only if the sum of the first 140 rolls does not exceed 400Let S = X1 + X2 + ... + X140 where Xi is the number obtained in the ith rollNote E[X] = 7/2, Var[X] = 35/12So E[S] = 140(7/2) = 490, Var[S] = 140(35/12) = 1225/3By Central Limit Theorem, (with continuity correction)Pr{S ≤ 400}≈ Pr{Z < (400.5 - 490)/√(1225/3)}≈ 4.731327 * 10^(-6)
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