A) 102°
B) 98°
C) 112°
D) 118°
Mathematics
A group of five clerks were assigned to insert 24,000 letters. After 2 hours, 2 clerks were removed. How long would the remaining clerks take to finish the rest?
A) Less than 3 hr
B) More than 2 hr, but less than 4 hr
C) More than 4 hr, but less than 6 hr
D) More than 1 hr
Jerry estimates that there are m marbles in a jar. Harry knows the actual number of marbles (n) is within 10 marbles of Jerry’s estimate. Which inequality shows this relation?
A) n + 10 < m < n – 10
B) m – 10 < n < m + 10
C) n < m – 10
D) None of these
1/a × 1/b = 1, then the value of a-b-c is:
A) 0
B) 1
C) cannot determined
D) -1
We read 3/8 of the book one day and 4/5 of the pages the other day. If there were 400 pages unread, how many pages did the book contain?
A) 310 pages
B) 110 pages
C) 90 pages
D) 240 pages