Problems on L.C.M and H.C.F - Data Intensity 2 | Multiple Questions and Answers

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Problems on L.C.M and H.C.F - Data Intensity 2 Multiple Questions and Answers.

16.	A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they meet again at the starting point?

	A.	26 min 18 sec
	B.	42 min 36 sec
	C.	45 min
	D.	46 min 12 sec

17.	The least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 is:

	A.	3
	B.	13
	C.	23
	D.	33

18.	The least number of four digits which is divisible by 15, 25, 40 and 75 is____?

	A.	9000
	B.	9400
	C.	9600
	D.	9800

19.	The smallest fraction, which each of 6/7, 5/14, 10/21 will divide exactly is___?

	A.	30/7
	B.	30/98
	C.	60/147
	D.	50/294

20.	What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30?

	A.	196
	B.	630
	C.	1260
	D.	2520

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