Q21-------------------How many figures are required to number a book containg 150 pages.
a. 450
b. 360
c. 262
d. 342
2007-07-11 16:35:10 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
::
from 1 to 9 = 9 numbers x 1 digit = 9
from 10 to 99 = 90 numbers x 2 digits = 180
from 100 to 150 = 51 numbers x 3 digits = 153
9 + 180 + 153 = 342
Answer is d. 342.
2007-07-11 17:09:08 · answer #1 · answered by sweetwater 7 · 1⤊ 1⤋
Total figures from 1 - 9 ----- > 9
Total figures from 10 - 99 ----- > 90*2 = 180
Total figures from 100 - 150 ----- > 51 * 3 = 153
Grand total = 180 + 153 + 9 = 342
2007-07-15 02:43:39 · answer #2 · answered by Akilesh - Internet Undertaker 7 · 0⤊ 0⤋
d.342....
2007-07-11 23:39:21 · answer #3 · answered by sprite 6 · 0⤊ 1⤋
d.342
good Q
2007-07-12 03:39:59 · answer #4 · answered by sneha 2 · 0⤊ 1⤋