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Q: What is the greatest number of digits a product could have if a 4 digit number is multiplied by a 2 digit number?

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The greatest number is 7.

When a number is multiplied by itself, its product is called its exponent. When a number is multiplied by itself 30 times, this is the number's 30th exponent, or its 30th power. Two multiplied by two 30 times is 1,073,741,824. It has 10 digits.

2

36 is twice the product of its digits multiplied. 3 times 6 equals 18, and 18 times 2 equals 36.

2 digit number

That number is infinite. There is no number so large that it cannot be multiplied by 11.

It can have up to 5 digits.

Since the greatest digit is 9 and the greatest 2-digit number is 99, the product of them is 891.

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1

0

When a natural number is multiplied by 1,000, the product is

98

The product of 36 (= 9 X 4) by any integer will be integrally divisible by both 4 and 9. The smallest integer by which 36 can be multiplied to yield a product with five digits is 278, for which the product is 10,008. The largest integer by which 36 can be multiplied to yield a product with no more than five digits is 2777, for which the product is 99,972. Therefore, the product of 36 multiplied by any integer from 278 to 2777, inclusive, satisfies the requirements stated in the problem. 36,000 and 46,656 are examples.

13

max[x*y | x and y belong to {0,1,2,3,4,5,6,7,8,9}]

All numbers are made with digits and there is no limit on how big they can be. So there is no greatest number.

no, it matters with the number not digits

Find a four digit number whose digits will be reversed when multiplied by nine?

If it end with a five or zero, the number is the product of a factor multiplied by 5.

product

The greatest 4-digit number with no repeated digits is... 9876

The greatest whole number with 5 digits is 99,999. The next greater whole number is 100,000, which is the least whole number having 6 digits.

If three is subtracted from the product to get 17, the product must be 20. Then find what number can be multiplied by 5 to get 20. The answer is 4.

if 2 positive numbers are multiplied, then the product is positive. if 2 negative numbers are multiplied, the product is positive. if a positive and a negative number are multiplied, the product is negative.