Find the sum of the first 5,000 odd numbers. A clothing store bought a sweater f

Question

Find the sum of the first 5,000 odd numbers. A clothing store bought a sweater for a certain price and marked it up 70%. The sweater didn't sell, so the store owner took 25% off the original sale price and it sold at that price. What percent profit did the store make? The obstacle course was very challenging. Three out of every 8 contestants fell in the mud at the beginning and gave up. Then 1 out of 5 couldn't climb over the wall. Then 2 out of 9 couldn't jump over the hurdles and quit. What percent of the contestants made it to the finish line? Theotis has to load a truck with television sets. the cargo area of the truck is a rectangular prism that measures 8 ft by 21 ft by 11 ft. Each television set measures 1 1/2 ft by 1 1/3 ft. How many sets can be loaded into the truck?

Explanation / Answer

Step 1. So we need to add the first 5000 odd numbers from 1-9999.

Step 2. We note that 1+9999=10,0000 and 3+9997=10,000 5+9995=10,000 and so on.

Step 3. So we will have 2500 pairs of these numbers adding to 10,000.

Step 4. Then 2500*10000=25000000.

Step 5. ANSWER: The sum of the first 5000 odd numbers is 25 million.

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