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Which of the following is the equivalent mathematical symbol of the expression, "A book of stamps at the post office has less than 10 stamps in it"? * b. s > 10 a. s < 10 d. s is greater than or equal to 10 c. s is less than or equal to 10

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ANSWER

s < 10

EXPLANATION

With the 'less than' or 'greater than' symbol we can see that it's like an equal sign that has been shrinked on one end. In the smallest end we have to write the smallest expression or number and in the largest end we have to write the greatest expression or number.

For example: 5 < 10 is the same as 10 > 5, because the smallest number (5) is in the smallest end of the sign and the greatest number (10) is in the largest end of the sign in both expressions.

If 's' is the number of stamps, the expression says that there are 'less than' 10 stamps at the post office, so 's' has to be in the smallest end of the sign.

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