We have : 3.5.7.9.11 = 15.7.9.11
= ........5
So , the last digit number is 5
3 * 5 * 7 * 9 * 11
= 15* 7 * 9 * 11
= 105 * 9 * 11
= 945 * 11
= 10395
The last digit of this product is 5
The last digit of the product 3 * 5 *7 * 9 * 11 is 10395
Đúng thì tk, sai thì thui