Question

9. Write the prime factorisation of the following numbers.
(i) 48
(ii) 96
(iii) 114
(iv) 312
(v) 375
(vi) 840
0. Which of the following are prime factorisations?
(i) 54 = 6 x 3x3
(ii) 124 = 2 x 2 x 31
(iii) 180 = 2 x 5 x3 x 6
(iv) 42 = 2 x3x7
1. State whether the statements are True or False-
(i) If a number is divisible by 3, it must be divisible by 9.
(ii) If a number is divisible by 9, it must be divisible by 3.
(iii) A number is divisible by 18, it is divisible by both 3 and 6.
(iv) If two numbers are co-prime then at least one of them must be prime
(v) All numbers which are divisible by 4 must also be divisible by 8.
(vi) All numbers which are divisible by 8 must also be divisible by 4.
(vii) If a number exactly divides the sum of two numbers separately, it m
divide sum.
(viii) If a number exactly divides the sum of two numbers, it must exactly
numbers seperately.​

Answer 1

Answer:

Step-by-step explanation:

1)no

2)yes

3)yes

4)no need

5)no

6)yes

7) sometimes it possible

8)yes