Project Euler.ipynb

Kernel: SageMath 9.1

1

s = 0
for i in range(1000):
    if i % 3 == 0 or i % 5 == 0:
        s += i
print(s)

233168

4

largest = 0
largest_pair = (0,0)
for a in range(100, 1000):
    for b in range(100, 1000):
        p = a * b
        if str(p) == str(p)[::-1]:
            if p > largest:
                largest = p
                largest_pair = (a,b)
print(largest_pair)

(913, 993)