If the ratio of two numbers is 5:7 and their LCM is 630, then their HCF is:
If the ratio of two numbers is 5:7 and their LCM is 630, then their HCF is:
If 2x = 64, then x is:
If 2x = 64, then x is:
The sum of first 100 even natural numbers is:
The sum of first 100 even natural numbers is:
The least number which when divided by 20, 25 and 30 leaves remainder 5 in each case is:
The least number which when divided by 20, 25 and 30 leaves remainder 5 in each case is:
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?
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:
Which one is a Pythagorean triplet?
Which one is a Pythagorean triplet?
The least common multiple of 48, 64 and 80 is:
The least common multiple of 48, 64 and 80 is:
The least number exactly divisible by 24, 36 and 54 is:
The least number exactly divisible by 24, 36 and 54 is:
The HCF of 72 and 120 is:
The HCF of 72 and 120 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 greatest number that divides 1485 and 1740 leaving remainder 9 in each case is:
The greatest number that divides 1485 and 1740 leaving remainder 9 in each case is:
LCM of two numbers is 480 and their HCF is 16. If one number is 96, the other is:
LCM of two numbers is 480 and their HCF is 16. If one number is 96, the other is:
The product of first 5 prime numbers is:
The product of first 5 prime numbers is:
The number of positive divisors of 360 is:
The number of positive divisors of 360 is:
The smallest number which is divisible by 9 and 10 both is:
The smallest number which is divisible by 9 and 10 both is:
HCF of two numbers is 8 and their product is 3072. The LCM is:
HCF of two numbers is 8 and their product is 3072. The LCM is:
Which of the following is not a perfect cube?
Which of the following is not a perfect cube?
The greatest number that divides 398, 436 and 542 to leave the same remainder in each case is:
The greatest number that divides 398, 436 and 542 to leave the same remainder in each case is:
The HCF of 2.1, 0.63 and 0.105 is:
The HCF of 2.1, 0.63 and 0.105 is:
LCM of first 10 natural numbers is:
LCM of first 10 natural numbers is:
The least number which when divided by 16, 24, 36 leaves remainder 12 in each case is:
The least number which when divided by 16, 24, 36 leaves remainder 12 in each case is:
How many 3-digit numbers are divisible by 11?
How many 3-digit numbers are divisible by 11?
The LCM of two co-prime numbers is always equal to:
The LCM of two co-prime numbers is always equal to:
The least number exactly divisible by 15, 25 and 40 is:
The least number exactly divisible by 15, 25 and 40 is:
The greatest common divisor of 7/16 and 21/40 is:
The greatest common divisor of 7/16 and 21/40 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.
HCF of (2³ × 3² × 5) and (2² × 3³ × 7) is:
HCF of (2³ × 3² × 5) and (2² × 3³ × 7) is:
The LCM of 288 and 252 is:
The LCM of 288 and 252 is:
The greatest number dividing 293 and 378 to leave remainders 7 and 5 respectively is:
The greatest number dividing 293 and 378 to leave remainders 7 and 5 respectively is: