An electrician needs to buy 144 light bulbs. the light bulbs come in packages of 8. he bought 4 packages from the store and 5 packages from the shop. how many more packages of light bulbs does the electrician need to buy?

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

(a) (8%) compute the probability of an even integer among the 100 integers 1! , 2! , 3! , until 100! (here n! is n factorial or n*(n-1)*(n-2) *… 1) (b) (16%) compute the probability of an even integer among the 100 integers: 1, 1+2, 1+2+3, 1+2+3+4, …., 1+2+3+… + 99, and 1+2+3+… + 100

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