find out the lowest number which is exactly divisible by 36 , 45 , 63 , and 80.
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3
Answer:
To find it, first list out the prime factors of each number.
36: 2, 2, 3, 3
45: 3, 3, 5
63: 3, 3, 7
80: 2, 2, 2, 2, 5
The LCM will be that number whose prime factors include each prime factor above at their greatest number of occurences for any number.
LCM: 2, 2, 2, 2, 3, 3, 5, 7
Now multiply. I find it useful to reorder these numbers and multiply numbers in sequence which make the mental math work better, not harder
(2×5) ×(3×3) ×(2×2×2)×7
10 × 9 × 8 × 7
90 × 56. (or 10! - 6!)
5040 <--- That's your answer. I'm tired. u test it.
mark as brainlist
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1
Answer:
80 , 63 , 45 , 36 This is a Answer
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