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How many of the 1000 smallest positive integers are congruent to 7 modulo 29?

 Jul 17, 2024
 #1
avatar+1768 
0

The answer is 58.

 Jul 17, 2024
 #2
avatar+1926 
+1

We can write a handy equation to solve this problem. 

First, let's set a variable. Let's set x as a positive integer. 

Any number congruent to 7 modulo 29 can be written in the form

\(29x+7\) since it is 7 greater than a factor of 29. 

 

thus, we can write the inequality

\(29x+7\leq 1000\)

Setting the two to equal and solving for x, we have

\(29x+7=1000\\ 29x=993\\ x \approx 34.24\)

Rounding down, we find x is 34. 

So our answer is 34. 

 

Thanks! :)

the answer is \(34\)

 Jul 17, 2024
edited by NotThatSmart  Jul 17, 2024

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