Hypothermia occurs due to loss of excessive heat from body due to sudden low body temperature in:

Find the code of 55432?

In each of the following questions, select the related word/ number/ letter from the given alternatives.

Heart : Cardiologist : : Eye : ? 

In each of the following questions, select the related word/ number/ letter from the given alternatives.

15 : 2601 : : 23 : ? 

Costs of two articles were in the ratio of 16: 23. The cost of first articles increases by 10% and that of second by Rs.477. Now the costs of two articles are in a ratio of 11: 20. The price of the second article (in Rs.) in the beginning was-

In a polygon, the sum of the interior angles is double the sum of the exterior angles. What is the number of sides of the polygon?

A solid metallic cylinder of base radius 3 cm. and height 5 cm. is melted to form cones, each of height 1 cm. and base radius 1 mm. The number of cones is -

A sum of money was lent at 10% per annum, compounded annually, for 2 years. If the interest was compounded half - yearly, he would have received Rs.660.75 more. Find the sum.