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- 1. Multiple Choice
Which of the following is smallest prime number:
1
2
3
4
- 2. Multiple Choice
The only prime number which is also even
1
2
3
4
- 3. Multiple Choice
If a number is divisible by 2 and 5 both then is divisible by
2
5
7
10
- 4. Multiple Choice
Which of the following number is divisible by 3
121
123
124
122
- 5. Multiple Choice
A number is divisible by 4 if its
iast digit is 4
last digit is 0
last two digits are divisible by 4
last digit is 8
- 6. Multiple Choice
The HCF of two co prime numbers is 1
False
True
- 7. Multiple Choice
Which of following number is multiple of 8
2
4
10
16
- 8. Multiple Choice
The numbers having more than two factors are called
Prime numbers
Composite numbers
Even numbers
Odd numbers
- 9. Multiple Choice
Which number is neither prime nor composite
1
0
2
3
- 10. Multiple Choice
Find the L.C.M. of 12 and 18
6
36
12
18
- 11. Multiple Choice
In which of the following expressions, prime factorisation has been not done?
24 = 2 × 2 × 2 × 3
56 = 7 × 2 × 2 × 2
70 = 2 × 5 × 7
54 = 2 × 3 × 9
- 12. Multiple Choice
4 = 2 x 2 , 15 = 3 x 5, so H.C.F. of 4 and 15 is
0
1
2
3
- 13. Multiple Choice
Which of the following numbers is divisible by 11?
165
111
222
100
- 14. Multiple Choice
Every number is a multiple of itself.
True
False
- 15. Multiple Choice
LCM of 10, 15 and 20 is
30
60
90
180
- 16. Multiple Choice
Two tankers contain 850 litres and 680 litres of kerosene oil respectively. Find the maximum capacity of a container which can measure the kerosene oil of both the tankers when used an exact number of times.
Have to find HCF
Have to find LCM
- 17. Multiple Choice
In a morning walk, three persons step off together. Their steps measure 80 cm, 85 cm and 90 cm respectively. What is the minimum distance each should walk so that all can cover the same distance in complete steps?
Have to find HCF
Have to find LCM
- 18. Multiple Choice
Divisibility by 2,5,10 can be checked by
sum of digits
last digit
last two digits
last three digits
- 19. Multiple Choice
The greatest digit in the '*' of 67*24 so that the number formed is divisible by 3 :
9
8
7
6
- 20. Multiple Choice
The smallest digit in the '*' of 67*24 so that the number formed is divisible by 3 :
0
1
2
3
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