Question
A certain sum of money invested at R% p.a. fetches a
compound interest (compounded annually) of 1560 and simple interest of Rs.1500 at the end of 2 years. Find the value of ‘R’.Solution
Difference between compound interest and simple interest for 2 years = 1560 – 1500 = Rs.60 Simple interest for 1 year = 1500/2 = Rs.750 So, R = (60/750) × 100 = 8%
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Consider the following binary tree:
   5
   / \
  3  8
  / \ / \
 1 4 6 9
What is t...
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