TCS Company Numerical Ability Profit and Loss

Find the value of @@+25-++@16, where @ denotes square and + denotes square root and - has its usual meaning

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TCS Other Question

In a market 4 men are standing. The average age of the four before 4years is 45, after some days one man is added and his age is 49. What is the average age of all?


2. A car manufacturer produces only red and blue models which come out of the final testing area at random. What are the odds that five consecutive cars of same color will come through the test area at any one time?
a) 1 in 16 b) 1 in 125 c) 1 in 32 d) 1 in 25