AP EAMCET2016MathematicsPermutation and Combination
The greatest positive integer which divides (n+16)(n+17)(n+18)(n+19) , for all positive integers n , is
Options
- A6
- B24
- C28
- D20
Correct answer
B. 24
Step-by-step solution
Given, (n+16)(n+17)(n+18)(n+19) As we can observe that these numbers are th product of four consecutive natural numbers. This number gets divided by 4 !=24 .