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Earn 100

Which of the following numbers should be added to to make it exactly divisible by ?
(a)
(b)
(c)
(d)

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Important Questions on Number System and Simplification
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Three numbers which are co- prime to each other are such that the product of the first two is and that of last two is . the sum of the three numbers is :

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The smallest number which is divided by , each time remain. The number is

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Three consecutive positive even numbers are such that thrice the first number exceeds double the third by , the third number is

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The sum of three numbers is . If the first number be twice the second and third number be one-third of the first, then the second number is

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Number of students who have opted for the subjects A, B and C are respectively. The examination is to be conducted for these students such that only the students of the same subject are allowed in one room. Also the number of students in each room must be same. What is the minimum number of rooms that should be arranged to meet all these conditions?

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The unit digit in the product is :

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Unit's place digit in is

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Six bells commence tolling together and toll at intervals of and respectively. In , how many times do they toll together?
