# Number System Aptitude Questions and Concepts:

#### Overview:

 Questions and Answers Type: MCQ (Multiple Choice Questions). Main Topic: Quantitative Aptitude. Quantitative Aptitude Sub-topic: Number System Aptitude Questions and Answers. Number of Questions: 10 Questions with Solutions.

1. If A205 is divisible by 11, then find the value of the smallest natural number A?

1. 3
2. 5
3. 7
4. 9

Solution: According to the condition, A205 is divisible by 11 if and only if (A + 0) - (2 + 5) = A - 7, is divisible by 11. Here A = 7, fulfill the condition.

1. Which one of the following number is not divisible by 2?

1. 4520
2. 6725
3. 3224
4. 1110

Solution: Here option (b) is satisfied with the condition.

1. Which one of the following number is divisible by 3?

1. 2668
2. 1665
3. 4666
4. 1958

Solution: Here option (b) is satisfied with the condition.

1. Which one of the following number is not divisible by 4?

1. 12328
2. 14432
3. 16316
4. 18218

Solution: Here option (d) is satisfied with the condition.

1. If 392A is divisible by 9, then find the value of the smallest natural number A?

1. 3
2. 4
3. 5
4. 6

Solution: According to the condition, 392A is divisible by 9, if and only if 3 + 9 + 2 + A = 14 + A, is divisible by 9. Here A = 4, fulfill the condition.

1. Which one of the following number is divisible by 6?

1. 3396
2. 3914
3. 4472
4. 4936

Solution: Here option (a) is satisfied with the condition.

1. If A372 is divisible by 11, then find the value of the smallest natural number A?

1. 5
2. 2
3. 7
4. 9

Solution: According to the condition, A372 is divisible by 11 if and only if (A + 7) - (3 + 2) = A + 2, is divisible by 11. Here A = 9, fulfill the condition.

1. Which one of the following number is divisible by 8?

1. 1696
2. 1786
3. 1890
4. 1986

Solution: Here option (a) is satisfied with the condition.

1. Which one of the following number is divisible by 9?

1. 5868
2. 5606
3. 5086
4. 7669

Solution: Here option (a) is satisfied with the condition.

1. If 33A is divisible by 6, then find the value of the smallest natural number A?

1. 3
2. 5
3. 6
4. 8