Question

Million period consists of the places _____.
A.M, TM
B.M, TM, HM
C.TTH, HTH, M
D.O, T, M

Answer 1

Hint: Here, we will make a place value chart. We will locate the millions period in it and compare the places with the places given in the options.

Formulas used: We will use the formula, \[\underbrace {10 \times 10 \times 10 \times ... \times 10}_{{\rm{n times}}} = {10^n}\] , to solve the question.

Complete step-by-step answer:
We know that in the international number system, the leftmost digit has the place value of 1 also known as ones. As we move right-ward, the place value of each digit gets multiplied by 10.
The digits of a number are grouped into 3 and each such group is called a period.
The first period is called the ones period. It consists of the place values ones, tens and hundreds.
The second period is called the thousands periods. It consists of the place values thousands, ten thousands and hundred thousands.
The third period is called Millions. It consists of the place values millions, ten millions and hundred millions.
 The fourth period is called billion. It consists of the place values billions, ten billions and hundred billions.
The periods keep increasing after billions in a similar manner. We will draw a place value chart to represent these periods:

Period	Place Value	Place Value (Numerical)	10th Power representation
ONES	Ones	1	\[{10^0}\]
	Tens	10	\[{10^1}\]
	Hundreds	100	\[{10^2}\]
THOUSANDS	Thousands	1,000	\[{10^3}\]
	Ten Thousands	10,000	\[{10^4}\]
	Hundred Thousands	100,000	\[{10^5}\]
MILLIONS	Millions	1,000,000	\[{10^6}\]
	Ten Millions	10,000,000	\[{10^7}\]
	Hundred Millions	100,000,000	\[{10^8}\]
BILLIONS	Billions	1,000,000,000	\[{10^9}\]
	Ten Billions	10,000,000,000	\[{10^{10}}\]
	Hundred Billions	100,000,000,000	\[{10^{11}}\]

We can see from the chart that the millions period consists of the places millions (M), ten millions (TM) and hundred millions (HM).
$\therefore $ The correct option is B.
Note: There are 2 number systems in existence. First is the international number system that we saw above and second is the Indian number system. The Indian number system is different from the international number system. We will draw a place value chart to represent the Indian number system:

Period	Place Value	Place Value (Numerical)	10th Power representation
ONES	Ones	1	\[{10^0}\]
	Tens	10	\[{10^1}\]
	Hundreds	100	\[{10^2}\]
THOUSANDS	Thousands	1,000	\[{10^3}\]
	Ten Thousands	10,000	\[{10^4}\]
LAKHS	Lakhs	100,000	\[{10^5}\]
	Ten Lakhs	1,000,000	\[{10^6}\]
Crores	Crores	10,000,000	\[{10^7}\]
	Ten Crores	100,000,000	\[{10^8}\]