find the least number which on adding 7 is exactly divisible by 15,35 and 48.
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Hey
15 = 3 * 5
35 = 5 * 7
48 = 2 * 2 * 2 * 2 * 3
Now ,
LCM = 2⁴ * 3¹ * 5¹ * 7¹
= 16 * 3 * 5 * 7
= 48 * 5 * 7
= 240 * 7
= 1680
So ,
required number is :- 1680 - 7
= 1673 .
Now. ,
you can also , divide 1673 by all these numbers it won't be divisible but when you will add 7 to 1673 then it will be divisible .
thanks :)
15 = 3 * 5
35 = 5 * 7
48 = 2 * 2 * 2 * 2 * 3
Now ,
LCM = 2⁴ * 3¹ * 5¹ * 7¹
= 16 * 3 * 5 * 7
= 48 * 5 * 7
= 240 * 7
= 1680
So ,
required number is :- 1680 - 7
= 1673 .
Now. ,
you can also , divide 1673 by all these numbers it won't be divisible but when you will add 7 to 1673 then it will be divisible .
thanks :)
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