The correct option is A 5525
The place value chart for the numbers is given below:
NumberNumber ofNumber ofNumber ofNumber ofthousandshundredstensones5525552555205520299929999990999
The number with more digits is greater than the one with lesser digits. Thus, 999 is the smallest of the lot. We now need to compare the remaining numbers.
5–525 and 5–520 have 5 thousands each, whereas 2–999 has only 2 thousands. Thus, 5525 and 5520 are both greater than 2999.
552–––5 and 552–––0 both have 5 hundreds and 2 tens.
Comparing digits at ones place:
5525– has 5 ones and 5520– has zero ones.
Thus, 5525 is the greatest of the lot.