FOR CHILDREN

PROBLEM # 1

Animals: What will come next? Explain how you knew.
dog, bird, tiger, kitten, ____________.

PROBLEM # 2

List the 11th prime number.

FOR GROWNUPS

PROBLEM # 3
Using exactly four fours and any other mathematical symbols, find an expression equivalent to 25. You may not use any additional numbers in your expression.

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SOLUTIONS TO PROBLEMS ON 01/15/04

PROBLEM # 1

Tommy has a 1.69 ounce bag of M&Ms. The bag contains 56 M&Ms. He decides to share his candy by giving Lucy two-thirds of three-fourths of his M&Ms. Lucy decides to share her M&Ms with Melissa by giving Melissa two-thirds of three-fourths of her M&Ms. If half of Melissa's M&Ms are red, how many red M&Ms does she have?

SOLUTION

7.

PROBLEM # 2

DOGSANDCATSDOGSANDCATSDOGSANDCATS…..

If the above pattern continues, what will be the 101st letter in the pattern?

SOLUTION

O.

PROBLEM # 3
How many people must be at a party before you have even odds or better (probability that birthday of two people is on same day >= 0.5) of two having the same bithday (not necessarily the same year, of course)?

SOLUTION

1- 364/365*363/365...(365-N)/365 >0.5
N = 23

WINNERS

Congratulations to Abhijay Karandikar, Sirisha Nalamati, Keshav Narsu, Deepa Santaumayor and Mukund Seshadri who were winners of the last set of puzzles.

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