The least and greatest numbers in a list of 7 real numbers are 2 and 20, respectively. The median of the list is 6, and the number 3 occurs most often in the list. Which of the following...
The least and greatest numbers in a list of 7 real numbers are 2 and 20, respectively. The median of the list is 6, and the number 3 occurs most often in the list. Which of the following...
a shaded polygon which has equal sides and equal angles is partially covered with a sheet of blank paper. If x+y=80 how many sides does the polygon have?
If ak = 5 +52 + 53 + 54 + … + 5k , for what value of k will ak be divisible by 10?
If a_k= 5 + 5^2 + 5^3 + 5^4 + ... + 5^k , for what value of k will a_k be divisible by 10?
Exactly 5 actors try out for the 5 parts in a movie. If each actor can perform any one part and no one will perform more than one part, how many different assignments of actors are possible?
In Steve's math class,12 students play the piano and 17 students play the guitar. If a total of 19 students play only one of these two instruments, how many students play both instruments?