**(1)** What is the smallest number that when divided by 20, 25, and 30 leaves a remainder of 7?

- (a) 357
- (b) 377
- (c) 427
- (d) 457

**(2)** If the H.C.F of two numbers is 12 and their L.C.M is 288, what is the product of the two numbers?

- (a) 3456
- (b) 2368
- (c) 4032
- (d) 5184

**(3)** Which of the following cannot be the H.C.F of two numbers whose product is 7680?

- (a) 32
- (b) 50
- (c) 64
- (d) 128

**(4)** Find the H.C.F of 48 and 64.

- (a) 12
- (b) 8
- (c) 16
- (d) 24

**(5)** Three bells ring at intervals of 12, 18, and 24 minutes, respectively. If they all ring together at 12:00 PM, at what time will they next ring together?

- (a) 1:00 PM
- (b) 2:00 PM
- (c) 2:24 PM
- (d) 3:00 PM