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When the paragraph is lengthy it is very difficult to remember the given data.For each question I have to go back to the paragraph again.so how to get rid of that?

There are two flasks M and N containing 130 ml and 180 ml of two different concentrations of acid. Now 'x' ml is withdrawn from each flasks, and then the amount withdrawn from M is added to N and vice versa. Finally the concentrations found to be equal in both the flasks. Find x?

How To Increase Accuracy In RC's?

number of integral solution of 2x+3y+4z=144?

how many number of solutions to the equations a+b+c+d = 12 where 1<= a,b,c,d <=6?

How many different values of positive integer 'n' are there such that expansion of 1/n terminates when written in base 57 and 323 such that n < 10000.

Aman reads 4 newspaper thoroughout the year. He numbered them as 1,2,3.. 365. He reads TOI on days of multiple of 15, HT of 7, IE of 4 and TT of 3 multiple. How many days did he read exactly 2 newspaper and number of days he did not read any newspaper?

The last two digit of the multiplication of 1*3*5*7.........97*99 will be

How much practice of DI on an average is required

The analysis of recently held CBSE exam shows that Chennai Zone, Delhi Zone and Ajmer Zone have performed the best. The average marks of the Ajmer Zone & Delhi Zone put together is 71%. The average marks of Chennai Zone & Delhi Zone put together is 76% and the average marks of Chennai Zone & Ajmer Zone put together is 79%. What is the range of the average marks of all the three zones ( N ) put together. a) 71%<N<78% b) 70.5%<N<77.5% c) 73.5%<N<77.5% d) 73%<N<79%