9,864,320
9876 is the largest four digit number you can make if all the digits must be different.
9999
For this type of "the largest number which..." questions, you need to advance from left to right, using the largest possible digit in each case. For the first two digits, that would be 9, for the third digit (the right-most digit), the largest digit which will make this possible is an 8.
99996
348+301 can make 649
what is the largest 4-digit number you can make
9876 is the largest four digit number you can make if all the digits must be different.
999next number is 1,000
9999
9,999
For this type of "the largest number which..." questions, you need to advance from left to right, using the largest possible digit in each case. For the first two digits, that would be 9, for the third digit (the right-most digit), the largest digit which will make this possible is an 8.
99996
348+301 can make 649
2
299
The greatest product you can achieve by multiplying a 3-digit number by a 1-digit number is 9720, which comes from multiplying 972 (the largest 3-digit number less than 1000 when divided by 9) by 9 (the largest 1-digit number). Thus, the factors are 972 and 9.
The number is 9875.