The LCM of two numbers is 180 and their HCF is 15. If one number is 45, the other is:
The LCM of two numbers is 180 and their HCF is 15. If one number is 45, the other is:
The sum of the first 50 natural numbers is:
The sum of the first 50 natural numbers is:
The number of factors of 840 which are perfect squares is:
The number of factors of 840 which are perfect squares is:
The remainder when 232323^{23}2323 is divided by 7 is:
The remainder when 232323^{23}2323 is divided by 7 is:
If a number is divisible by 9 and 10, it must be divisible by:
If a number is divisible by 9 and 10, it must be divisible by:
Which of the following is a perfect square?
Which of the following is a perfect square?
If the LCM of two numbers is 168 and HCF is 12, then the product of the two numbers is:
If the LCM of two numbers is 168 and HCF is 12, then the product of the two numbers is:
The number of integers between 1 and 1000 divisible by neither 2, 3 nor 5 is:
The number of integers between 1 and 1000 divisible by neither 2, 3 nor 5 is:
The number of factors of 1080 is:
The number of factors of 1080 is:
The largest 4-digit number exactly divisible by 88 is:
The largest 4-digit number exactly divisible by 88 is:
A number is divisible by 11 if:
A number is divisible by 11 if:
How many numbers between 1 and 1000 are divisible by 7 but not divisible by 3?
How many numbers between 1 and 1000 are divisible by 7 but not divisible by 3?
The product of two consecutive odd numbers is always:
The product of two consecutive odd numbers is always:
Which of the following numbers is divisible by both 8 and 12?
Which of the following numbers is divisible by both 8 and 12?
A two-digit number is 4 times the sum of its digits. If 18 is added, the digits interchange. Find the number.
A two-digit number is 4 times the sum of its digits. If 18 is added, the digits interchange. Find the number.
Which of the following is not an integer?
Which of the following is not an integer?
The remainder when 414141^{41}4141 is divided by 5 is:
The remainder when 414141^{41}4141 is divided by 5 is:
The unit digit of 172317^{23}1723 is:
The unit digit of 172317^{23}1723 is:
The smallest 5-digit number divisible by 12, 15 and 18 is:
The smallest 5-digit number divisible by 12, 15 and 18 is:
The least number which when divided by 35, 45 and 55 leaves the same remainder is:
The least number which when divided by 35, 45 and 55 leaves the same remainder is:
The least number exactly divisible by 24, 36 and 54 is:
The least number exactly divisible by 24, 36 and 54 is:
Find the number of zeros in 50!50!50!.
Find the number of zeros in 50!50!50!.
The least number which when divided by 12, 16, 20 and 24 leaves a remainder 4 in each case is:
The least number which when divided by 12, 16, 20 and 24 leaves a remainder 4 in each case is:
The sum of digits of a two-digit number is 9. If 27 is subtracted from it, digits are reversed. Find the number.
The sum of digits of a two-digit number is 9. If 27 is subtracted from it, digits are reversed. Find the number.
If the sum of two numbers is 84 and their HCF is 12, then the number of such pairs is:
If the sum of two numbers is 84 and their HCF is 12, then the number of such pairs is: