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Calculate the number 958

NUMBERMANIA: Calculate the number 958 using numbers [4, 3, 9, 6, 31, 552] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 16

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A Brushing Pal

I am looking for someone to brush their teeth with me.
I found out that 9 out of 10 dentists say brushing alone won't reduce cavities.

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Mars survey

In 1997, the Mars Global Surveyor, launched in Nov 1996, went into an elliptical orbit around Mars. To drop into a lower orbit the original mission plan was to use a braking effect by dipping into the upper Martian atmosphere. The lower orbit was a better position for mapping purposes. However, the aerobraking method originally planned was suspended for several weeks to give engineers time to develop more gentle manoeuvers to protect the craft when a solar array failed to deploy correctly, and was flexing excessively. It was to spend two years mapping the surface of Mars.

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