Mathematics

If x10 = 12145 find x

If x10 = 12145 find x
  • A.
    124
  • B.
    121
  • C.
    184
  • D.
    180
Correct Answer: Option C
Explanation

x10 = 12145
= x10 = 1 x 53 + 2 x 52 + 1 * 51 + 4 x 50
= 1 x 125 + 2 x 25 + 1 x 5 + 4 x 1
= 125 + 50 + 5 + 4
= 184