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The difference between the ages of two of my three grandchildren is 3. My eldest grandchild's age is three times than the age of my youngest grandchild and my eldest grandchild's age is two years more than the ages of my two youngest grandchildren added together. How old is my eldest grandchild?
15
12
13
10

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TCS Other Question

There are 7 friends (A1, A2, A3....,A7). If A1 have to shake hand with all without repeat. How many hand shakes possible? A man travels from A to B at 70 mph over a certain journey and returns over the same route to A, at 80 mph. What is his average speed for the journey?
a) 74.66 b)75 c)74.33 d)74.99 7.