Which vitamin exists  in the Cobalt   ?

Sum of the two numbers is 80. LCM and HCF of that two number is 168 and 8 respectively. Find the difference of the numbers?

Find out the sum of digits of largest number that leaves same remainder when it divides 12003, 6006, 5506 and 10006. 

The greatest number of four digits which when divided by 10, 12, 14 leave remainders 5, 7, 9 respectively is:

The product of two numbers is 504 and their HCF is 6. Total number of such pairs of numbers is?     

The LCM of two numbers is 4 times of their HCF. The sum of LCM and HCF is 280. If one of the number is 224, then the other number is:

What is the HCF of   (x4  - x2  - 6)    and   (x4  - 4x2  + 3) ?

The H.C.F of two numbers is 8 and their L.C.M is 136. If one of the numbers is 64, find the other?

LCM of 21 ⁵ , 21 ¹⁰ and 21 ¹⁵ is?

(1). 21 ⁵

(2). 21 ¹⁵

(3).21³⁰

How many factors does the number 675 have in total?

The LCM of two numbers is 960 while their product is 7680. Find the greatest common divisor of the two numbers.