Question

2.Write first five multiples of:


(a) 6 (b) 8 (c) 12


3. Write all the prime numbers less than 30.


4. Using divisibility tests, determine


which of the following numbers are


divisible by 3,9 and 11: (a) 5445 (b) 10824 (c) 7138965 (d)


70169308 5. Find the HCF of the following numbers:


(a) 18.48 (b) 30, 42


6. Find the LCM of 30, 24 and 16


7.Find the prime factorisation of a) 100 b)150


8.Draw a rough sketch of a quadrilateral KLMN. State.


(a) two pairs of opposite sides, (b) two pairs of opposite angles,


(c) two pairs of adjacent sides, (d) two pairs of adjacent angles.

Answer 1

Answer:

2:(a) 6,12,18,24,30..

(b) 8,16,24,32,40..

(c) 12,24,36,48,60