Question

(ii) 18
(vii) 252
(iii) 48
(viii) 420
EEE
1
(i) 20, 25, 30, 40 :
EXERCISE 3.4.
1. Find the prime factorisation of each of the following numbers :
(i) 12
(iv) 56
(vi) 136
(ix) 637
(xi) 1224
(xii) 1323
(xiii) 8712
(xiv) 9317
2. Find the HCF of the following pairs and say if they are coprime :
(1) 25, 27
(ii) 17, 34
(iii) 21, 24
(iv) 99, 100
(v) 8, 15
(vi) 35, 91
3. Find the HCF by prime factorisation method :
(i) 138, 375
(iii) 144, 576, 804 (iv) 15, 90, 105
4. Find the greatest number which divides the following completely.
(i) 650, 350, 750 (ii) 84, 112, 280 (iii) 1064, 456, 304 (iv) 374, 272,51
5. Which is the smallest number which can be the multiple of :
(ii) 90, 35, 105 (iii) 24, 42, 35
6. Choose the correct answer for the prime factorisation of 27 :
(iv) 56, 84, 280
Hef (ii) 170, 405
L24​

Answer 1

Answer:

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