Receive b) An insurance company offered 1 % commission for the first 10 lakh and 1.5% for
the rest sum of money collected from new clients by its agents. If an agent
collect a sum of Rs 12,64,000 from his new clients, find his total commission ​

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

Which questions are you talking about