ASAP Please .

Question

How many 7-digit numbers can you make from using the digits 3, 3, 4, 5, 6, 6, 6 if the number must be less than 5 000 000 and must be odd?

Answer 1

3346665

odd means the last digit must be 3 or 5, never 6

less than 5,000 means the 1st digit must be 3 or 4, never 5 or 6

3+2+6+4=15 in ascending order with 3 as the 1st digit

then do the same for 4 as the 1st digit. sum them

3+4+3+3=13

15+13= 28

3436665

3456663

35466634

3645663

3654663

3663465

3663645

3664563

3664653

3664635

3665463

3666345

3666435

3666453

3666543

4336665

4356663

4366635

4536663

4566633

4653663

4656363

4663365

4663563

4665363

4666335

4666353

4666533