(1) the tenth digit of 10d is 7;
(2) the thousandths digit of d/10 is 7.
answer
问小数d的百分位(即小数点后第2位)是否大于5?
(1)10d的十分位是7,所以d的百分位是7,大于5
(2)d/10的千分位是7,所以d的百分位是7,大于5