单项选择题

RESULTS ON A HISTORY TEST

*Arithmetic meanThe average(arithmetic mean)score for allof the students in the 3 classes iS（）

 

A. less than 70
B. between 70 and 73
C. exactly 73
D. between 73 and 76
E. greater than 76

<上一题 目录 下一题>
热门 试题

单项选择题
A certain jar contains 100 jelly beans：50white，30 green，10 yellow，5 red，4purple，and 1 black．If a jelly bean is to be chosen at random，what is the probability that the jelly bean will be neither purple nor red（）

A. 0.09
B. 0.11
C. 0.55
D. 0.91
E. 0.96
单项选择题
The numbers 3，10，17，24，31，and 38 are the first six terms of an infinite sequence inwhich each term after the first is 7 greater than the preceding term．What is the 45thterm of the sequence（）

A. 308
B. 311
C. 312
D. 315
E. 318
相关试题