Prime Factorisation, HCF and LCM
1)Which shows the prime factorization of 84?

2)Which of the following numbers is not co-prime?

3)Three tankers contain 403 litres, 434 litres and 465 litres of diesel respectively. Find the maximum capacity of a container which can measure the diesel of the three tankers when used an exact number of times.

4)Which of the following statements is not true?

5)The length, breadth and height of a room are 825 cm, 675 cm and 450 cm respectively. Find the longest tape which can measure the three dimensions of the room exactly.

6)I am the smallest number, having four different prime factors. Can you find me?


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