Find the next number that fits the pattern:

## 73, 61, 56, 62, ?

54

Explanation:

s(n) = s(n-1) - [(first digit of s(n-1) - last digit of s(n-1)) * last digit of (s-1)]

61 = 73 - ( (7 - 3) * 3)

56 = 61 - ( (6 - 1) * 1)

62 = 56 - ( (5 - 6) * 6)

54 = 62 - ( (6 - 2) * 2)

#### See Also