Question

4. The number next to 3778 exactly divisible by 9 is
5. If 'a' is a factor of 'b' and 'b' is a factor of 'a', then
6. Composite numbers below 100 having only 3 factors
are​

Answer 1

Answer:

3780

Step-by-step explanation:

sum of digits is divisible by 3

3+7+8+0

Answer 2

Step-by-step explanation:

(4) 3778

3+7+7+8=25 [ according to divisibility rule of 9]

for 9 divisibility +2 is needed as the sum of digit will become 27 , which is divisible by 9 hence the number is 3780