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Chandu Rajyaguru

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If cac69 + 89cc6 = 1a1b05 find number abc. Multiple solutions may exist.
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
NUMBERMANIA: Calculate the number 1157 using numbers [8, 5, 8, 3, 77, 801] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Aircraft Anti Hijacking System Patent

In 1974, a U.S. patent was issued to Gustano A. Pizzo (1926-2006) of Jackson Heights, N.Y., for his “Anti Hijacking System for Aircraft” (No. 3,811,643). It described an electro-mechanical system immediately aft of the pilots cabin to trap airplane hijackers. When activated a hijacker is dropped by trap doors through the floor into a net bag in the belly area. The hijacker's weight causes a draw cord to close the bag and also automatically open the airplane's specially-installed bomb bay doors. The encapsulated hijacker is dropped and parachuted to earth, where police, having been alerted by radio, await his arrival. On 21 Sep 2013, Pizzo was posthumously awarded the Ig Nobel Prize for Safety Engineering.«

A Texan farmer goes to Austral...

A Texan farmer goes to Australia for a vacation.
There he meets an Aussie farmer and gets talking.
The Aussie shows off his big wheat field and the Texan says, "Oh! We have wheat fields that are at least twice as large."
Then they walk around the ranch a little, and the Aussie shows off his herd of cattle. The Texan immediately says, "We have longhorns that are at least twice as large as your cows."
The conversation has, meanwhile, almost died when the Texan sees a herd of kangaroos hopping through the field. He asks, "And what are those?"
The Aussie replies with an incredulous look, "Don't you have any grasshoppers in Texas?"
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