PP1 (Shorter) Quant Section 1 (Medium) Q5

<p><span style="color:#27ae60;"><span style="font-size:20px;">Solving the Problem</span></span></p> <p>You might assume that you can plug $725$,$278 \times 67$,$066$ into the crappy <a href="https://www.gregmat.com/tools/calculator" target="_blank">GRE calculator</a>, but you&#39;ll quickly see that you get a nice <span style="color:#e74c3c;">ERROR</span> message.</p> <p>There is good news, however. To find the tens digit and unit digit of the product, you don&#39;t need to multiply the two numbers together in their entirety. It&#39;s enough to take just the last two digits of each number:</p> <p style="text-align: center;">$78 \times 66 = 5$,$148$</p> <p>Now we can add the tens digit and unit digit together: $4+8=12$. Thus, <strong><span style="color:#27ae60;">the correct answer is A</span></strong>.</p>