Statement I: 24 is a perfect number.

Statement II: If the sum of all the factors of a number is equal to twice the number, then the number is called a perfect number.

1. Statement I is true but statement II is false.

2. Statement I is false but statement II is true.

3. Both Statement I and statement II are true.

4. Both Statement I and statement II are false.

Write all factors of:

(i) 88

(ii) 105

(iii) 96

Which of the following pairs of numbers are co-prime?

(i) 25 and 105

(ii) 59 and 97

(iii) 161 and 192

Using divisibility tests, determine which of the following numbers are divisible by 4, 6, 8, 9 or 11:

(i) 197244

(ii) 613440

(iii) 4100448