In the 6/49 lottery, you choose six numbers from 1 to 49 inclusive and you win the grand prize if the six numbers selected in the draw match your six numbers.
To check their ticket, a man gets a newspaper and reads to his wife the numbers that were chosen from the previous night s draw.
But after he reads out only the first number, she lets out a cheer, knowing from that number alone that they've won.
What was the number that the man read?