Number System MCQs

1. 
Determine the largest four – digit number that is exactly divisible by 15, 25, 40, and 75.

2. 
The smallest natural number which is divisible by 26, 8, 11 and 13 is:

3. 
X is a greatest three – digit number exactly divisible by 12, 20, and 25. The sum of the digits of X is:

4. 
The mean (rounded off to two decimal place) of the first 6 odd prime numbers is:

5. 
If

\(\frac{p}{q} = \frac{19}{5} + \frac{2}{7} – 2.4 + (\frac{4.8}{2.4})^2\)
“Where p/q is in its simplest form, find the sum of the digits of q.”

6. 
Find the value of \((\frac{1}{7})^{-4} + (\frac{1}{9})^{-4} + (\frac{1}{5})^{-4}\)

7. 
Which of the following is the smallest fraction?

8. 
Which of the following numbers is the greatest of all?

9. 
How many two – digit numbers are divisible by 5?

10. 
\(\frac{0.0259\times 2.61}{0.7\times 18.5 \times 0.0087}\)

11. 
Evaluate : \(2\times\{17 – 2 \times (11 – 5)\}\)

12. 
Which of the following numbers is divisible by 11?

13. 
A number when increased by 50%', gives 2580. The number is:

14. 
If 125 : y : : y : 180, find the positive value of y.

15. 
Convert 0.363636 into a fraction.

16. 
The average of first 120 odd natural numbers, is:

17. 
Evaluate : \(41 – [21 -\{11 -(15 – 6 \div 3\times 3)\}]\)

18. 
What is the smallest 5- digit number exactly divisible by 999?

19. 
A number when increased by 50%, gives 2430. The number is:

20. 
Simplify \(5\frac{1}{2} +6\frac{1}{2} \:- 8\frac{1}{4} + 24 -\: [9\:- \{6- \:(10-\: \overline{4-3})\}]\)

21. 
Find the value of \(8.15 \times 0.35 -\: 2.36 \times 0.8 + 1.07 -\:0.5 \times 0.8 -\: 2.56\)

22. 
Evaluate : \(2\times\{17 – 2 \times (11 – 4)\}\)

23. 
\(\sqrt{(20+\sqrt{((22 +\sqrt{(2 +\sqrt{(40 + \sqrt{(81)}\big)}\bigg)}\Bigg)}\Bigg)}\)

24. 
For what value of 'K' is the number 6745K2 divisible by 9?

25. 
Solve: \((\frac{1}{10}\div\frac{16}{100}) \text {of}\: \frac{3.2}{0.4} + 120 \div 4 \text {of}\: 3\times 10\)

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