Loan of Rs. 34,370 repaid by three annual payments, the second payment, t5he second payment being twice the first and the third payment being three fourths of the second. If the interest be 10% per annum payable annually find the last payment.
Sacrificial anode protects iron of ship, underground pipelines etc, from resting,. a process known as cathodic protection , which one of the following metals cannot be used as a sacrificial anode?
