The HCF and LCM of two numbers are 21 and 4641 respectively. If one of the numbers is 189, find the other.
The HCF and LCM of two numbers are 21 and 4641 respectively. If one of the numbers is 189, find the other.
The last two digits of 1725617^{256}17256 are:
The last two digits of 1725617^{256}17256 are:
If a number ends with 25, its square ends with:
If a number ends with 25, its square ends with:
How many numbers are there between 1 and 100 divisible by both 2 and 3 but not by 5?
How many numbers are there between 1 and 100 divisible by both 2 and 3 but not by 5?
The product of two consecutive odd numbers is always:
The product of two consecutive odd numbers is always:
The sum of digits of any number divisible by 9 is always:
The sum of digits of any number divisible by 9 is always:
The greatest 3-digit number divisible by 27 is:
The greatest 3-digit number divisible by 27 is:
The sum of the first 50 natural numbers is:
The sum of the first 50 natural numbers is:
Which of the following numbers is divisible by both 8 and 12?
Which of the following numbers is divisible by both 8 and 12?
The product of first 5 prime numbers is:
The product of first 5 prime numbers is:
The largest 4-digit number exactly divisible by 88 is:
The largest 4-digit number exactly divisible by 88 is:
The HCF of 2.1, 0.63 and 0.105 is:
The HCF of 2.1, 0.63 and 0.105 is:
The remainder when 71007^{100}7100 is divided by 13 is:
The remainder when 71007^{100}7100 is divided by 13 is:
The smallest number which leaves a remainder 1 when divided by 2, 3, 4, 5, 6 is:
The smallest number which leaves a remainder 1 when divided by 2, 3, 4, 5, 6 is:
The number of 4-digit numbers divisible by 6 is:
The number of 4-digit numbers divisible by 6 is:
The sum of first 20 odd numbers is:
The sum of first 20 odd numbers is:
The smallest prime number greater than 100 is:
The smallest prime number greater than 100 is:
The remainder when 414141^{41}4141 is divided by 5 is:
The remainder when 414141^{41}4141 is divided by 5 is:
The number of positive divisors of 360 is:
The number of positive divisors of 360 is:
The number of prime numbers less than 100 is:
The number of prime numbers less than 100 is:
Which of the following is not a prime number?
Which of the following is not a prime number?
Which of the following is not a perfect cube?
Which of the following is not a perfect cube?
If 2x = 64, then x is:
If 2x = 64, then x is:
The sum of the digits in the number 10100−110^{100} - 110100−1 is:
The sum of the digits in the number 10100−110^{100} - 110100−1 is:
The smallest prime factor of 91 is:
The smallest prime factor of 91 is: