# Practice Questions on Number SystemAptitude Questions and Answers

## Easy Number System Question - 31

 Q31. The numbers 1 to 29 are written side by side as follows $1234567891011......2829$. If the number is divided by 9, then what is the remainder?
 A. 0 B. 1 C. 2 D. 3

## Easy Number System Question - 32

 Q32. When 75% of a two-digit number is added to it, the digits of the number are reversed. Find the ratio of the unit's digit to the ten's digit in the original number.
 A. 1:2 B. 1:4 C. 2:1 D. 3:2

## Easy Number System Question - 33

 Q33. How many zeroes will be there in the expansion of the expression $1^1 × 2^2 × 3^3 × 4^4……..× 100^{100}$
 A. 1200 B. 1232 C. 1300 D. 1296
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