单选题
For any integer n greater than 1, 
denotes the product of all the integers from 1 to n, inclusive. How many prime nunbers are there between 
and 
denotes the product of all the integers from 1 to n, inclusive. How many prime nunbers are there between and
【正确答案】
A
【答案解析】[解析] 由题意可得：
[*]=1×2×3×4×5×6=720
所以该题即为求722和726之间的质数的个数，很明显722，723，724，725，726均为合数。
[*]=1×2×3×4×5×6=720
所以该题即为求722和726之间的质数的个数，很明显722，723，724，725，726均为合数。