**Q4.**The six-digit number 12334 A is divisible by 9, where A is a single-digit whole number. Find the minimum value of A.

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**Q6.**Find the four digit largest number which when divided by 30, 18 and 20 leaves remainder 3 in each case.

**Q7.**Find the difference between the sum of the digits of the largest 4-digit number divisible by 11 and the sum of the digits of the largest 4-digit number divisible by 16.

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**Q9.**What is the greatest number which when divided by 728 and 900 leaves the remainder 8 and 4 respectively?

**Q10.**Akash wants to donate 87375 blankets to 698 complexes in a nearby locality. If he wants to keep some blankets with himself, then how many such blankets should he keep so that all the complexes get equal number of blankets?

**Q1.**Four bells ring at intervals of 5, 10, 12 and 15 minutes respectively. If they start ringing together at 3 o'clock, after what interval of time will they ring together and how many times will they ring together in 18 hours?

**Q4.**If the product of two numbers is 578 and their Highest Common Factor is 17, then what is the difference between the two numbers?

**Q9.**The Highest Common Factor of two numbers is (2/5)th of their Least Common Multiple. If the product of two numbers is 1690, then what is their Highest Common Factor?

**Q10.**If 'a' and 'b' are two smallest positive prime numbers, then what is the difference between their L.C.M. and H.C.F.?

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**Q1.**Columbus started his journey from Lucknow to Kolkata which is 200 km, at the speed of 40 km/h. then he went to Banglore which is 300 km at the speed of 20 km/h. Further he went to Ahmadabad which is 500 km at the speed of 10 km/h. The average speed of Columbus.