68*21=1428
Six does.
Only when their GCF is 2.
No. You can always find a common multiple by multiplying two numbers together. It will only be the least common multiple if the numbers have no common factors other than one.
No. By adding 4+4+4 the answer comes to 12. To subtract the answer comes to 4. By multiplying it is 64.
It depends on the number of significant figures from two numbers you are multiplying. But when multiplying you use the same number of significant figures from the numbers you are multiplying with the LEAST number of significant figures. Example: 92,873.239 * 2 = 200,000 (because the number 2 has only 1 significant figure even tho 92,873.239 has 8 significant figures your answer still only has 1 significant figure)
You have 4 options for the first digit, 3 for the second, 2 for the third. Multiplying all this you get 4 x 3 x 2 = 24 options.
No, multiplying a set of numbers can only come out as one product. Therefore, two numbers having the same prime factorization is impossible.
9
You only need two. 59 x 83 = 4897
In maths the product is the result of multiplying two numbers. You have only given one so there can be no product.
Yes. Natural numbers are counting numbers, equal to or greater than 0. The only ways a product can be less than its multiplicands is when multiplying fractions by fractions or multiplying a positive number by a negative number.