Question

2744 written as a product of its primes is

• A. $2\times 2\times 2\times 7\times 7$ ​
• B. $2\times 2\times 7\times 7\times 7$
• C. $2\times 2\times 2\times 7\times 7\times 7$
• D. $2\times 2\times 7\times 7$

Answer 1

The correct option is C $2\times 2\times 2\times 7\times 7\times 7$

$\begin{array}{cc}2& 2744\\ 2& 1372\\ 2& 686\\ 7& 343\\ 7& 49\\ 7& 7\\ & 1\end{array}$
Hence, $2744=2\times 2\times 2\times 7\times 7\times 7$