I need some help on math questions/ Trig-Pre Calculus?

lufausljc

New member
can someone help me with these problems. can somebody please show the steps so I could understand it more clearly, thank you

1. Use Sigma Notation to write the sum 1/2(1) + 1/2(2) + 1/2(3) + ....... + 1/2(n)

2. How many distinct license plates can be made consisting of 3 letters followed by 3 numbers?

3. If three cards are dealt from a deck of 52, what is the probability that the first card is a heart and the next two are both diamonds.

4. If a card is drawn from a standard deck of 52, what is the probability that it is a black 10?

5. If the weather report is for a 25% chance of rain on Monday and a 10% chance of rain on Tuesday, what is the probability that it will not rain on either day?
 
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