Page 2 - CBQ CH 5
P. 2

(i)  What is the prime factorisation of 780 and 364.?
                        (ii)  What should be the minimum number of books in each shelf?
                        (iii) How many factors are common in 780 and 364.?
             ANS     Ans-
                     1) 9000
                     2) b) 8
                     3) a)
                     4) false, 6
                     5) Twin primes
                     6) 1, 2, 4, 8 and 16 (common factors)
                     7) 198
                     8) 35
                     9) 60
                     10) 12
                     11) 25,75,125
                     12) 19
                     13) (i) Factors of 780= 2 × 2 × 3 × 5 × 13
                     And 364 = 2 × 2 × 7 × 13
                     (ii) 52
                     (iii)2&13.









































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