State True or False: The relation between principal and amount is Principal < Amount.

The annual rate of compound interest is r% and if the first year principal is P, then the 2nd year principal is ___.

At present the population of a village is P and if rate of increase of population per year be r %, after n years the population will be: (a) P (1 + )n (b) P (1 + )n (c) P (1 + )2n (d) P (1 - )n

Calculate the difference between compound interest and simple interest on Rs. 20,000 for 2 years at 5% per annum.

The sum of Principal and Compound interest in certain time is called ___.

If the rate of simple interest and compound interest are both 10% per annum, then the ratio of simple interest and compound interest in second year of a certain principal will be - (a) 20 : 21 (b) 10 : 11 (c) 5 : 6 (d) 1 : 1

State True or False: In the compound interest if the rate of interest in the first three years is r1,%, r2%, 2r3% respectively, then the amount for the principal P at the end of three years is P

In how many years will Rs. 500 get Rs. 105 compound interest at 10% per annum compound interest?

The present population is 13,310. If the population be 17,280 after 3 years, what will be the rate of increase?

Divide ₹ 21,866 into two parts such that the amount of the first part for 3 years and amount of the second part for 5 years are equal at the same rate of 5% compound interest.

Aman has taken a loan of ₹ 25,000 for 3 years, in such a way that the compound interest for 1st year, 2nd year and 3rd year is 4%, 5% and 6% p.a. respectively. Find the amount be deposited after 3 years.

The number of smokers is decreasing at the rate of 6 % per year due to publicity of anti-smoking. If at present the number of smokers in a town is 22500, find the number of smokers of that town 2 years ago.