In a school every student is assigned a unique identification number. A student is a football player if and only if the identification number is divisible by 4, whereas a student is a cricketer if and only if the identification number is divisible by 6. If every number from 1 to 100 is assigned to a student, then how many of them play cricket as well as football?
The number of times the digit 5 will appear while writing the integers from 1 to 1000 is
If X is between -3 and -1, and Y is between -1 and 1, then X2 - Y2 is in between which of the following?
While writing all the numbers from 700 to 1000, how many numbers occur in which the digit at hundred's place is greater than the digit at ten's place, and the digit at ten's place is greater than the digit at unit's place?
A number consists of three digits of which the middle one is zero and their sum is 4. If the number formed by interchanging the first and last digits is greater than the number itself by 198, then the difference between the first and last digits is
What is the number of all possible positive integer values of n for which n2 + 96 is a perfect square?
The sum of two numbers is 143. If the greater number is divided by the difference of the numbers, the quotient is 7. What is the difference of the two numbers?
How many times will the digit 5 come in counting from 1 to 99 excluding those which are divisible by 3?
If x is a positive even integer and y is a negative odd integer, then xy is
The sum of two positive integers is 52 and their LCM is 168. What is the ratio between the numbers?
Suppose you have sufficient amount of rupee currency in three denominations: Rs. 1, Rs. 10 and Rs. 50. In how many different ways can you pay a bill of Rs. 107?
The ratio of a two-digit natural number to a number formed by reversing its digits is 4:7. The number of such pairs is
A printer numbers the pages of a book starting with 1 and uses 3089 digits in all. How many pages does the book have?
While multiplying three real numbers, Ashok took one of the numbers as 73 instead of 37. As a result, the product went up by 720. Then the minimum possible value of the sum of squares of the other two numbers isCOM_CONTENT_READ_MORE_TITLE
A positive integer is said to be a prime number if it is not divisible by any positive integer other than itself and 1. Let p be a prime number greater than 5. Then (p2 - 1) is
If n is a positive integer, then (√3+1)2n - (√3−1)2n is
Consider four-digit numbers for which the first two digits are equal and the last two digits are also equal. How many such numbers are perfect squares?
The product of all integers from 1 to 100 will have the following numbers of zeros at the end?
The sum of four consecutive two-digit odd numbers, when divided by 10, becomes a perfect square. Which of the following can possibly be one of these four numbers?
The number of positive integer valued pairs (x, y) satisfying 4x - 17y = 1 and x ≤ 1000 is
When you reverse the digits of the number 13, the number increases by 18. How many other two-digit numbers increase by 18 when their digits are reversed?
If N = (11p + 7)(7q – 2)(5r + 1)(3s) is a perfect cube, where p, q, r and s are positive integers, then the smallest value of p + q + r + s is:
If the product of three consecutive positive integers is 15600 then the sum of the squares of these integers is