Download 19848_ques-pea300_number-system-tut

Number systems
Q1. If both 112 and 33 are factors of the number a * 43
* 62 * 1311, what is the smallest possible value of 'a'?
A)121
b) 3267
c) 363
d) 616
Q2. Find out the number of zeroes in 8 × 15 × 23 × 17 ×
25 × 22 ?
3
4
5
8
Q3.Two pencils are 24cm and 42cm long. If we have to
make them of equal size, then the minimum number of
similar pencils is
Q4. Find out the number of zeroes in 8 × 15 × 23
× 17 × 25 × 22 ?
3
4
5
8
Q5. Which of the following is the factor of
11 x 2^3 x 3^5 x 7^8?
6^5
121
6^2
More than one of the above.
Q6. If 11^2, 3^4 and 2^5 are the factors of a x 12^7 x
17^6 x 21^5 then what is the minimum possible value
of a?
11
121
6^2
6^4
Q7. A person starts multiplying consecutive
numbers starting from 20. Till what minimum
number he/she has to multiply to get a result ending
with three zeros.
25
30
35
50
Q8. Find the number of factors of 19600?
32
36
40
45
Q9. What is the least number which must be
multiplied with 5400 to get a perfect square?
2
3
6
8
Q10. What is the least number which must be
multiplied with 43200 to get a perfect square?
2
3
6
9
Q11.Square root of
53824 = ?
Q12. The last two digits of 998915423 are
A)81
B)91
C)61
D)None
Q13. Determine the digit in the units position
of 13^23 * 27^37 * 19^45.
A)7
B)9
C)3
D)none
Q14. Which of the following has the most number of
divisors?
A)99
B)100
C)101
D)176
Q15. Let N be the greatest number that will divide
1305, 4665 and 6905, leaving the same remainder in
each case. Then sum of the digits in N is
A)4
B)5
C)8
D)6
Q16. The greatest number of four digits which is
divisible by 15, 25, 40 and 75 is
A)9000
B)9600
C)8000
D)None
Q17.The LCM of two number is 4800 and their HCF is
160. If one number is 480, then the second number is