The product of a number and 7 in not less than 21.
7*n=>21 Diwide with 7
n=>21/7
n=>3
=> is symbol equal or larger
To find the number that satisfies the given condition, we need to set up an inequality. Let's call the unknown number "x".
The product of the number and 7 can be written as 7x. According to the problem statement, this expression should not be less than 21. Mathematically, we can represent this as:
7x ≥ 21
To solve this inequality, we need to isolate the variable x. We can do this by dividing both sides of the inequality by 7 since it is a positive number. This gives us:
x ≥ 21/7
Simplifying further, we have x ≥ 3.
Therefore, any number that is equal to or greater than 3 will satisfy the given condition.