How many total legs are there on 4 horses and 11 people?
Determine the units digits in the following addition: 12 + 22 + 32 + … 20162 + 20172.
If \(\dfrac{3}{2}\) x \(\dfrac{4}{3}\)x \(\dfrac{5}{4}\)x \(\dfrac{6}{5}\)x ... x \(\dfrac{a}{b}\)= 201 , find the sum of a + b.
Forty students from five grades brought 50 candies for the “Trick or Treat” game in a Halloween party. It is known that students from the same grade brought an equal number of candies, while students from different grades brought different numbers of candies. How many students brought exactly one candy?
Mr. Trump buys 71 pencils. Each pencil costs 2 dollars, and 67 pens, each pen costs 3 dollars. He gets a discount of 1 dollar for 3 pencils he buys and a discount of 2 dollars for 5 pens he buys. How much in total does he pay?