self Maths Puzzle

An observer 1.6m tall is 20√3 away from a tower. The angle of elevation from his eye to top of the tower is 30◦. The height of the tower is

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self Other Question

1. A sum of Rs. 3310 is to be paid back in 3equal annual installments. What is the total interest charged if the interest is compounded annually at 10%?

* a. Rs.1331
* b. Rs. 683
* c. Rs. 331
* d. Rs. 993
What is special about the following sequence of numbers?
8 5 4 9 1 7 6 10 3 2 0