Chapter 1 Number Systems Ex 1.3

Chapter 1 Number Systems Ex 1.3

Question 1.
Write the following in decimal form and say what kind of decimal expansion each has

Solution:

Question 2.

Solution:

Question 3.

Question 4.

Question 5.

Question 6.

Question 7.
Write three numbers whose decimal expansions are non-terminating non-recurring.
Solution:
0.74074007400074000074…
0.6650665006650006650000…
0.70700700070000…

Question 8.

Solution:
To find irrational numbers, firstly we shall divide 5 by 7 and 9 by 11,
so,

Question 9.
Classify the following numbers as rational or irrational