Question

9. Using divisibility tests, determine which is divisible by 2, 3, 4, 6, 8, 9,

10 and 11:

i) 10824 ii) 31795072 iii) 1000000

10. A number is divisible by both 5 and 12. By which other number will

that number be always divisible?

11. Find the common multiples of 4, 3 and 9.

12. Write the greatest 5-digit number and express it in terms of its prime

factors.

13. What is the LCM and HCF of:

i) 18, 54, 81 ii) 70, 105, 175

14. I am a smallest number, having four different prime factors. Can you

find me?

15. Find the least length of a rope which can be cut into whole number of

pieces of lengths 45 cm, 75 cm and 81 cm.

16. 210 oranges, 252 apples and 294 pears are equally packed in cartons so

that no fruit is left. What is the biggest possible number of cartons

needed?

17. Find the smallest 3-digit number which is divisible by 4, 6 and 2.

18. Find product by suitable rearrangements:

625 × 243 × 16

19. Find the value using suitable properties:

i) 5647 × 134 – 34 × 5647 ii) 854 × 107

20. A vendor supplies 42 litre of milk to a hotel in the morning and 76 litre

of milk in the evening. If the milk cost Rs. 55 per litre, how much

money is due to the vendor per day?​

Answer 1

Answer:

9

Step-by-step explanation:

i.10824

using divisibility test of all the numbers we Can conclude but our answer is 10824