Mamun is twelfth from the left and Alam is fifteenth from the right in a row. If we interchange their positions, Alam becomes twentieth from right. How many boys are there in the row ?

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Job Solution Dutch-Bangla Bank Ltd Dutch-Bangla Bank Ltd - Asst. Officer (ATM Help Desk) - 02-01-2009 গণিত
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The average of a set of 12 numbers, which includes 34, is A. If 34 is removed from the set and 38 is included to the set , what is the average of the new set of numbers in terms of A ?

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The average weight of 3 young men is 53 kg. No one of them weight less than 51 kg. What is the maximum weight of any one man ?

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A cake is made into 18 pieces . If syma takes 1/3 of the cake and Robin takes 1/3 of the rest that are left, how many pieces are still left ?

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B and C are points on straight line AD, on which AB=BC=CD. What percent of AC is AD ?

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