Find the largest 4-digit number which is completely divisible by 66.

Correct option is D

Given:

We need the largest 4-digit number divisible by 66.

Solution:

Required number = $$\left\lfloor \frac{9999}{66} \right\rfloor \times 66$$​​

​$$= \left\lfloor 151.5 \right\rfloor$$ 

Now,  taking the integer value

​$$151 \times 66 = 9966$$ 

Thus, the largest 4-digit number divisible by 66 is 9966