The following exercises are from Project Euler
Problem 1: Multiples of 3 or 5
Problem 2: Even Fibonacci Numbers
Problem 3: Largest Prime Factors
Problem 4: Largest Palindrome Product
Problem 5: Smallest Multiple
Problem 6: Sum Square Difference
Problem 7: 10001st Prime
Problem 8: Largest Product in a Series
Problem 9: Pythagorean Triplet
Problem 10: Summation of Primes
Problem 11: Largest Product in a Grid
Problem 12: Highly Divisible Triangle Number
Problem 13: Large Sum