# Number System

Number System Questions: What is Number System in Maths? Divisibility Rules for 7, Divisibility Rules for 11, Binomial Theorem Questions, Factorize Expressions

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## Online Aptitude Questions with Answers on Number System

Q231. (51+ 52 + 53 + ... + 100) = ?

1.  2525
2.  2975
3.  3225
4.  3775

Solution : 3775
Q232. 1904 x 1904 = ?

1.  3654316
2.  3632646
3.  3625216
4.  3623436
5.  None of these

Solution : 3625216
Q233. Which one of the following is a prime number ?

1.  161
2.  221
3.  373
4.  437
5.  None of these

Solution : 373
Q234. The smallest 6 digit number exactly divisible by 111 is:

1.  111111
2.  110011
3.  100011
4.  110101
5.  None of these

Solution : 100011

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Q235. The largest 5 digit number exactly divisible by 91 is:

1.  99921
2.  99918
3.  99981
4.  99971
5.  None of these

Solution : 99918
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