3 digit number divisible by 3 are = 333 – 33 = 300
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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.