LCM of More than 2 Numbers

Q.

Three boys step off together from the same spot. Their steps measure$63cm,70cmand77cm$ respectively. What is the maximum distance each should cover so that all can cover distance in complete steps?

Q.

Rajan saves Rs. $5.75$ daily. Find the least number of days in which he will be able to save an exact number of
rupees.
[Hint: Find LCM of $575$ and $100$ first]

Q. A shopkeeper sells balloons in the pack of 40, Candles in a pack of 16 and Candies in pack of 30. Justina wants to celebrate her son's birthday for which these things are required. What will be the least total number of all these things that Justina should buy so that there will be one balloon for each candle and each candy?

1. $240$
2. $40$
3. $120$
4. $16$

Q.

Find the smallest number which when increased by $15$ is exactly divisible by $468$ and $520$

Q.

Three boys step off together from the same spot. Their steps measure $52\mathrm{cm},65\mathrm{cm}$and $78\mathrm{cm}$respectively . What is the minimum distance each should cover so that all can cover the distance in complete steps.

Q. Burak has organized an event of planting trees on the upcoming World Environment Day. He wants to plant same number of trees in each row. Number of plants in each row can be 7 or 9 or 11. The minimum number of trees, required for plantation, is

Q. The lowest number which leaves 4 as a remainder when divided by 10, 50 and 15 is

Q. The lowest comman multiple of numbers 36, 315, 90 and 28 will be

Q. The lowest number which when divided by 16, 64, 144 leaves the remainder as 0 is