EXERCISE 5.3
1. Find the values of the letters:
(a) 2 B C
(b)
+C 7 A
6 AB
ABC 3
5 D
BD 9 C
8 AA 50
87 BD C
X
(c)
A 2 BC
1 D 6
2 CA 10
BBDD 00
A 2 B C 0 0
7 D 7 7 10
X
2. Write five 2-digit numbers the product of whose digits is even.
3. Write three 4-digit even numbers divisible by 9.
4. Write four 5-digit numbers divisible by 3.
5. Write a 3-digit number divisible by 3 whose digits are consecutively
decreasing.