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# Find number abc

If cc722 - aab7c = 33143 find number abc. Multiple solutions may exist.
The first user who solved this task is On On Lunarbasil.
#brainteasers #math

### Do You Sell Dil...

A little old lady with blue hair entered the marital aids shop and asked in a quavering voice, "Yy-young man, dd-do y-you sell d-dil-ldoes h-here?"

The sa lesman, somewhat taken aback by the little old lady's appearance in his shop, answered, "Uh, yes, Ma'am. We do."

The little old lady, holding her quivering hands about 10 inches apart asked, "D-do y-you ha-aave an-ny ab-bb-bout th-this lon-ong?"

"Well, yes Ma'am, we do. We have several that size." Forming a 5" circle with her fingers, she then asked, "A-are an-nny of t-them about thi-is b-big ar-round-d?"

"Well... Yes ma'am a few of them are about that big."

"D-do aa-ny of th-them ha-ave a v-v-vibbbra-a-ator?"

"Yes, Ma'am, one of them does."

"W-Wel-ll, h-how d-do yo-ou t-turn it off?"

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## Brain Teasers

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### Universal milling machine

In 1865, a U.S. patent was issued for the universal milling machine invented by Joseph Rogers Brown (No. 46,521). With this four-speed, 1,800-lb machine, Brown could quickly make any size twist drill, and replace previously tedious handwork in spiral milling or gear-cutting operations. Adjustments were calibrated with an accuracy of one-thousandth of an inch. He had already invented a precision gear cutter in 1855 to produce clock gears, and later patented a universal grinding machine in 1877. As an inventor, Brown made numerous advances in the field of fine measurement and machine-tool production. He co-founded J.R. Brown and Sharpe in 1853 to manufacture his products.
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