Solution: Since, Both Sonia and Ravi move a similar way and simultaneously, the technique to make when they will meet again at the beginning stage is LCM of 18 and 12. Consequently, LCM(18,12) =...

Solution: By the meaning of composite number, we know, assuming a number is composite, it implies it has factors other than 1 and itself. In this way, for the given articulation; 7 × 11 × 13 + 13...

(I) 12, 15 and 21 (ii) 17, 23 and 29 (iii) 8, 9 and 25 Solution: (I) 12, 15 and 21 Composing the result of prime components for every one of the three numbers, we get, 12=2×2×3 15=5×3 21=7×3...

(I) 26 and 91 (ii) 510 and 92 (iii) 336 and 54 Solution: (I) 26 and 91 Communicating 26 and 91 as result of its excellent elements, we get, 26 = 2 × 13 × 1 91 = 7 × 13 × 1 In this manner, LCM (26,...

(I) 140 (ii) 156 (iii) 3825 (iv) 5005 (v) 7429 Solution (I) 140 By Taking the LCM of 140, we will get the result of its great factor. Subsequently, 140 = 2 × 2 × 5 × 7 × 1 = 22×5×7 (ii) 156 By...