The sum of first 100 even natural numbers is:
The sum of first 100 even natural numbers is:
The sum of first 20 odd numbers is:
The sum of first 20 odd numbers is:
The number of prime factors of 300 is:
The number of prime factors of 300 is:
The smallest number divisible by 18, 24 and 32 is:
The smallest number divisible by 18, 24 and 32 is:
The product of first 5 prime numbers is:
The product of first 5 prime numbers 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 positive divisors of 360 is:
The number of positive divisors of 360 is:
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 HCF of 2.1, 0.63 and 0.105 is:
The HCF of 2.1, 0.63 and 0.105 is:
The LCM of 72 and 120 is:
The LCM of 72 and 120 is:
The HCF of 72 and 120 is:
The HCF of 72 and 120 is:
How many 3-digit numbers are divisible by 11?
How many 3-digit numbers are divisible by 11?
The greatest 3-digit number divisible by 27 is:
The greatest 3-digit number divisible by 27 is:
The remainder when 71007^{100}7100 is divided by 13 is:
The remainder when 71007^{100}7100 is divided by 13 is:
If HCF of two numbers is 21 and their product is 1092, then their LCM is:
If HCF of two numbers is 21 and their product is 1092, then their LCM 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 sum of digits of any number divisible by 9 is always:
The sum of digits of any number divisible by 9 is always:
If a number ends with 25, its square ends with:
If a number ends with 25, its square ends with:
Which of the following is not a prime number?
Which of the following is not a prime number?
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 number of prime numbers less than 100 is:
The number of prime numbers less than 100 is:
Which one is a Pythagorean triplet?
Which one is a Pythagorean triplet?
The smallest prime factor of 91 is:
The smallest prime factor of 91 is:
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.