Elementary arithmetics

2010006103

Level: 
A
The light travels at speed of \(300\, 000\) kilometers per second. How many kilometres it travels in \(24\) hours? Give the result in exponential notation.
\( 2.592\cdot10^{10}\,\mathrm{km} \)
\( 2.592\cdot10^{11}\,\mathrm{km} \)
\( 25.92\cdot10^{10}\,\mathrm{km} \)
\( 2.592\cdot10^{9}\,\mathrm{km} \)

1003099406

Level: 
B
In mathematics, the product of all positive integers less than or equal to a non- negative integer \( n \) is denoted by \( n! \). For example: \( 5!=5\cdot4\cdot3\cdot2\cdot1=120 \). Which of the following statements is true?
\( 16! \) is divisible by \( 91 \).
\( 16! \) is divisible by \( 71 \).
\( 16! \) is divisible by \( 51 \).
\( 16! \) is divisible by \( 41 \).