What I Can Do In a school canteen, the number of ball pens (X) sold every recess time varies from day to day. Past records indicate that the probability distribution of X is as follows: No. of Ball pens X ProbabilityP(X) 0.029 1 0.049 0.078 0.155 4 0.212 0.262 6 0.215 Questions: 1. What is the probability that exactly four ball pens are sold? 2. What is the probability that at least two ball pens are sold? 3. What is the probability that at least two but fewer than five ball pens are sold? 3.

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