Question

1) Find the least number of square tiles required to pave the ceiling of a room 15m 17 cm long and 9m 2cm broad .

2) Explain why 2× 3 × 7× 13 ×17 + 7 is a composite number.

3)Find the least number that is divisible by all the numbers between 1 and 10 (both inclusive).

4) Using euclid's division algorithm find the HCF of 9828 and 14742.

5) Show that square of any positive integers is either of the form 4q or 4q + 1 for some integer q.​

Answer 1

Answer:

4.) 9828)14742(1

- 9828

4914)9828(2

-9828

0

as per Euclid's division algorithm,

a=bq+r

14742=(9828)(1)+4914

9828=(4914)(2)+0

so, hcf=4914

hope it helps u