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PLEASE HELP!!!!!! PLEASE 1. Find the multiples of 7 which is greater than 56 but less than 77.2. List all the common factors of the following: (i) 12,18,21 (ii) 20,40,35 (iii) 16,18,73. Write all prime numbers between 70 and 90.4. Write the following numbers as a product of their prime factors:(i) 70(ii) 105(iii) 91 |
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Answer» nd 70 are the multiples.2) (i) 12= 2*2*318=2*3*321=3*7 the common factor is 3(ii) 20=2*2*540=2*2*2*535= 5*7 the common factor is 5(iii) 16= 2*2*2*218= 2*3*37=1*7 the common factor is 13) the prime numbers lying between 70 and 90 are 71, 73, 77, 79, 83 and 89.4) (i) Factors of 70: 1, 2, 5, 7, 10, 14, 35, 70. Prime factorization: 70 = 2 x 5 x 7(ii) Factors of 105: 1, 3, 5, 7, 15, 21, 35, 105. Prime factorization: 105 = 3 x 5 x 7.(iii) the prime factors of 91 are 7, 13. Therefore, the product of prime factors = 7 × 13 = 91.please Mark me as BRAINLIST |
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