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After solving the mock how do i see the solutions?

How many pairs of co-prime natural number ,a,b exist such that a+b=100?

how to solve quant in a given time

By selling an article on 40% discount, the seller is still able to make profit of 20%.By how much above the cost price did he mark the price.

sir I had purchased SBI po 40 prelims and later I purchased SBI po 20 prelims but except 1st one I can't see the the later one when I log in my account

how to solve reasoning quickly?

How to convert hindi language for math and reasoning 

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in an AP the sum of the first 6 terms is equal to the sum of the first 8 terms. what is the sum of the first 14 terms?

there are a certain number of students who appeared in state level engineering examination cinducted in 3 different states A,B and C. All of them have cleared atleast one state's exam 39.4% students clear state A's exam 41.4% students cleared state B's exam and 53.6% students cleared state C's exam 8% students cleared only state A's and stste B's exam 7% students cleared only state B's and stste C's exam and 9.8% students cleared only state A's and stateC's exam if the total number of students in the group is 500. then answer the following.
question no 1, how many students cleared all 3 state level examinations .
2. how many students are there whi cleared examinations conducted by atleast 2 states.
3. how many students are there who have cleared atmost one exam conducted by these 3 states.