CTS Company Logical Reasoning General Mental Ability

There r two jars. In the first jar there is 25%Milk and in the
second jar there is 50% milk. What ratio of milk should be added to get 12 lit of milk from the two jars such that we get 62.5% Milk in the whole
mixture.

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CTS Other Question

In an examination a student must answer 65% of the questions correctly. But it was found t hat after answer 7 questions corretly out of the
first 14, the student qualified. What is the min no. of questions in
the paper. (a) 22 (b) 18 (c) 20 (d) Can't say

There r 8 envelops and 8 letters. What is the probability that the
all the letters will be inserted in the correct envelop.