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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


Find the least number of candidates in an examination so that the percentage of successful candidates should be 76.8%


The smallest prime number is



(112+122 132 ... 202) =


The difference between the place value and the face value of 6 in the numeral 856973 is


A certain number when divided by 899 gives a remainder 63. what is the remainder when the same number is divided by 29


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


95,115.
5, 138, ...., 189


Convert hexadecimal value 16 to decimal


If
(64)^2 -
(36)^2 = 20 * x, then x =


The voltages in digital electronics are continuously variable


The ratio of ages of two persons is 4 : 7 and one is 30 years older than theother.
Find the sum of their ages


6, 13, 28, ( ?)


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


What is the remainder let after dividing 1! 2! 3!..... 10! by 7


587×999 =


A number when divided by 6 leaves a remainder 3. When the square of the same number is divided by 6, the remainder is


What is the unit digit in
(4137)754


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


Which one of the following numbers is completely divisible by 45


The sum of even numbers between 1 and 31


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


The least number which when increased by 5 is divisible by each one of 24, 32, 36 and 54, is


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


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


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


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


The difference of the squares of two consecutive odd integers is divisible by which of the following integers


17,13,11,7,5,


17,44,62,53 ,