# Number System

Are you preparing for campus placements,Banking,SSC, IAS, Insurance,Defence and other competitive exams? Then, make sure to take some time in practicing the Number System questions and answer in Quantitative Aptitude. Moreover, only those questions are included that are relevant and likely to be asked in any competitive exam. So, take these questions and answer, brush up your skills and practice to stay fully prepared for any your exam.

• Q22.Find the value of X in the matrix given below:

• Q23.The digits of a three-digit number X are written in the reverse order to form another three-digit number Y. If Y>X and Y-X is perfectly divisible by 6, then which of the following is necessary true?

• Q24.Anu bought a box of chocolates to distribute them on her birthday in school. The box weighed 600 grams at the time of purchase. She distributed $\frac{3}{4}th$ of the chocolates and now, the weight of the box is 240 grams. Find the weight of the empty box?

• Q25.Half the people deboard the metro at each metro station after the first, and no one boards after the first station. If only one person deboard at 8th station, how many people boarded the metro at the first station?

• Q26.Directions : What should come in place of the question mark (?) in the following number series?
4, 24, 120, 480, 1440, 2880, ?