Milly $620 Billy $220
Milly 620 – 60 = 560 Milly 620 + 10 = 630
Billy 220 + 60 = 280 Billy 220 – 10 = 210

He was counting on it.

Tomorrow

A secret.

If they're square it's possible for the cover to slip down the hole (diagonally). A round manhole cannot fall down no matter which way it is rotated because it's width in any direction is greater than the opening on the hole.

6
6 = 6*7 = 42
5 = 5*6 = 30
4 = 4*5 = 20
3 = 3*4 = 12
2 = 2*3 = 6

A Road.

One of the coins is really not a nickel because nickel is the other coin.

It was a bight morning

There is a 50/50 chance of each toss being either heads or tails. The previous toss does not impact the next toss.

Dasher, Dancer and Donner.

13

12 x 12 = 144 => 1 + 4 + 4 = 9
13 x 13 = 169 => 1 + 6 + 9 = 16
25 x 25 = 625 => 6 + 2 + 5 = 13