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Let's practice 30 mcqs on
Number System
mcqs by everyone
How many ordered pairs of integer (x,y) are there such that their product is a positive integer less than 100
636
946
1090
546
Find the least number of candidates in an examination so that the percentage of successful candidates should be 76.8%
500
1000
250
125
The smallest prime number is
1
2
3
(112+122 132 ... 202) =
2485
8765
4326
2455
The difference between the place value and the face value of 6 in the numeral 856973 is
NONE OF THESE
6973
973
5994
A certain number when divided by 899 gives a remainder 63. what is the remainder when the same number is divided by 29
Cannot be determined
27
5
25
An Egyptian fraction has a numerator equal to 1, and its denominator is a positiveinteger.
What is the maximum number of different Egyptian fraction such that their sum is equal to 1, and their denominators are equal to 10 or less
7
9
5
3
95,115.
5, 138, ...., 189
162.9
162.5
162.8
160
Convert hexadecimal value 16 to decimal
2130
2430
2240
2210
If
(64)^2 -
(36)^2 = 20 * x, then x =
70
120
180
140
The voltages in digital electronics are continuously variable
True
False
The ratio of ages of two persons is 4 : 7 and one is 30 years older than theother.
Find the sum of their ages
210 years
90 years
140 years
110 years
6, 13, 28, ( ?)
68
45
59
67
Average marks of 15 students in a class is 145, maximum marks being150.
If two lowest scores are removed, the average increases by 5. Also, two lowest scores are consecutive multiples of 9. What is lowest score inthe.
class
NONE OF THESE
108
117
126
What is the remainder let after dividing 1! 2! 3!..... 10! by 7
7
5
88
1
587×999 =
615173
586413
None
587523
A number when divided by 6 leaves a remainder 3. When the square of the same number is divided by 6, the remainder is
1
3
2
What is the unit digit in
(4137)754
9
3
1
7
The product of the L.C.M. and H.C.F. of two numbers is 24. The difference of two numbers is 2. Find the numbers
None
2 and 6
3 and 9
6 and 4
Which one of the following numbers is completely divisible by 45
331145
181560
2033555
202860
The sum of even numbers between 1 and 31
512
6
240
128
The remainder when the positive integer m is divided by 7 is x. The remainder when m is divided by 14 is x 7. Which one of the following could m equal
72
45
85
53
The least number which when increased by 5 is divisible by each one of 24, 32, 36 and 54, is
867
890
870
859
The number obtained by interchanging the two digits of a two digit number is less than the original number by 27. If the difference between the two digits of the number is 3, what is the original number
75
45
Cannot be determined
74
If n is a positive integer, which one of the following numbers must have a remainder of 3 when divided by any of the numbers 4, 5, and 6
24n + 3
120n + 3
12n + 3
90n + 2
A man retired from his service at the age of 60. He served for 3/5th years of his retirementage.
He joined his job at the age of
30 Years
24 years
18 years
36 years
If we write down all the natural numbers from 259 to 492 side by side get a very large natural number259260261.
...491492.
How many 8's will be used to write this large natural number
53
44
32
34
The difference of the squares of two consecutive odd integers is divisible by which of the following integers
6
3
7
8
17,13,11,7,5,
2
-1
1
17,44,62,53 ,
26
66
63
29
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