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Calculate the number 1120

NUMBERMANIA: Calculate the number 1120 using numbers [7, 9, 1, 8, 36, 128] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 9

The first user who solved this task is Nasrin 24 T.

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Late Again

Teacher: "Why are you late this morning?"
Student: "Its my alarm clock. Everyone got up except me!"
Teacher: How did the alarm clock make you the only one not to get up?"
Student: "There are eight of us in the my family and the alarm clock was only set for seven."

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African-American patents an ironing board

In 1892, a U.S. patent for a specialized “Ironing Board” was issued to the black American inventor, Sarah Boone, likely a former slave (No. 473,653). Her design featured a quite narrow padded board, curved to make it easier to iron sleeves. Numerous patents were issued before hers with similar titles. The first patent designated specifically as an “Ironing Table” was issued several decades earlier, in 1858, to W. Vandenburg and J. Harvey (No. 19,390). Unpatented styles evolved from long long before that, so no single inventor can be identified for the earliest ironing board. For example, J.H. Mallory's “Ironing Table,” patented 24 Oct 1871 (No. 120,296) more closely resembles today's adjustable-height, collapsible model.«

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