Question

What is the LCM of (23 x 3 x 5) and (24 x 5 x 7)?​

Answer 1

Answer:

(d) 1680

LCM = (23 × 3 × 5, 24 × 5 × 7)

∴ LCM = Product of greatest power of each prime factor involved in the numbers

= 24 × 3 × 5 × 7

= 16 × 3 × 5 × 7

= 1680

Answer 2

Step-by-step explanation:

3 x 5 is 15.

15 x 23 is 345.

24 x 5 is 120.

120 x 7 is 840.

now we take lcm.

2 120 , 340

2. 60, 170

2. 30, 85

2. 15 , 85

3. 5 , 85

5. 1, 17

17. 1, 1.

2 x 2 x 2 x 2 x 3 x 5 x 17

16 x 15 x 17

170 x 17

2897.

hope it helps you......