Question

Express the smallest 5-digit number as a product of primes,
5.
6.
(a) 235674
7.
State which of the following numbers are divisible by both 3 and 9?
(b) 78015
Test which of the following numbers are divisible by 11.
(b) 2352825
What least number should be subtracted from the following numbers to make
(a) 147246
8.
them divisible by 3?
(a) 2825
9.
(b) 856291
What least number should be added to the following numbers to make then
divisible by 9?
(a) 42724
(b) 39065
10. Replace the blank in 625
by 11.
with the least number, so that the number is divisible
11. Write any two numbers which are-
(a) divisible by 3 but not 9.
(b) divisible by 5 but not 10.
(c) divisible by both 4 and 8.
(d) divisible by 2, 4 and 8.
12. Find the HCF of 1624, 522 and 1276.
13. Find the LCM of 198, 135, 108 and 54.
14. The HCF and LCM of two numbers are 13 and 1989 respectively. If one numbe
is 117, find the other.
15. Can two numbers have 15 as HCF and 350 as LCM? Why?
?
HOTS
Find the greatest number of four digits which is divisible by 15, 20 and 25.​

Answer 1

Answer:

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Answer 2

Answer:

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