1. Find the least number which when divided by 12, 15, 18 and 27 leaves remainders 10, 13, 16 and 25 respectively.

2. What is the highest common factor of 360 and 450?

3.If the product of two numbers is 2646 and their LCM is 42 then their HCF is:

4. Find the LCM of 0.63, 10.5, 2.1, 4.20

5. The product of 2 numbers is 35828 and their HCF is 26. Find their LCM.

6. Which of the following is the least of all?

7. Find the largest number of three digits exactly divisible by 15, 18, 27 and 30.

8. Find the LCM of the following fractions: 2/3, 8/9, 16/27, 32/81

9. HCF of two numbers is 19 and their LCM is 665. If one of the number is 95, find the other.

10. If(x+a) is the H.C.F of 2x 2 +5x-12 and x 2 +x-12 then find the value of a.

11.How many times does the number 5 occur in the range of numbers from 1 to 100?

12.Which of the following fractions is the least of all?

13. The HCF and LCM of two numbers are 45 and 270 respectively. If the ratio of the two numbers is 2:3 and smaller of the wo numbers is X, then find X.

14. Two numbers are in ratio 4:9 and their HCF is 11. Their LCM is:

15. Three numbers are in the ratio of 3:5:10 and their LCM is 630 Find the HCF

16. Two numbers are in ratio 4:9 and their HCF is 11. Their LCM is:

17. If the product of two numbers is 3192 and their LCM is 56 then their HCF is:

18. Find the H.C.F. & L.C.M. of 20 and 28.

19. Find the least number to be added to 1739 so that it is exactly divisible by 11.

20. The HCF and LCM of two numbers are 3 and 2730 respectively. If one of the numbers is 78, find the other number.

21.Find the LCM of 15, 25 and 28.

22.What is the smallest number of 5 digits which is exactly divisible by 12, 24, 48, 60 and 96?

23. The LCM of two consecutive even numbers is 144, find the numbers?

24. The LCM and HCF of 2 numbers are 168 and 6 respectively. If one of the numbers is 24, find the other.

25. Find the HCF & LCM of 16, 24.

26. The LCM of two numbers is 66. The numbers are in the ratio 2:3. The sum of the numbers is

27. If the product of two numbers is 3192 and their LCM 56 then ther' HCFis:

28. The HCF and LCM of two numbers are 3 and 2730 respectively. If one of the numbers is 78, find the other number.

29.Two numbers are in ratio 4:5 and their HCF is 13. Their LCM is:

30. If the product of two numbers is 2522 and their LCM is 97 then their HCF is:

31.The LCM of two numbers is 210. If their HCF is 35 and one of the numbers is 105, find the other number.

32. Find the LCM of 25/7, 15/28, 20/21.

33. The HCF of two numbers is 4 and the two other factors of LCM are 5 and 7. Find the smaller of the two numbers.

34. The HCF of two numbers is 6 and their LCM is 108. If one of the numbers is 12, then the other is