State true or false.
$4.32\times {{10}^{5}}$ seconds make a week.
A. true
B. false

Hint: One week is constituted of seven days. One day is expressed in hours as twenty four hours. One hour constitutes sixty minutes in total. And one minute is given as a total sixty seconds. These all may help you to solve this question.

Complete answer:
As we all know, one week is given as a total of seven days. Therefore we can write that,
$1week=7days$
In one day there are a total of twenty four hours. That is twenty four hours of span of time is described as one day.
$1\text{ day}=24\text{ hours}$
Hence we can write that,
One week will be having a total of the product of twenty four hours and the seven days. That is,
$1\text{week}=168h$
One hour is given as sixty minutes which can be written as,
$1h=60\min $
Therefore one week can be expressed as minutes by taking the product of the number of minutes in one hour and the number of hours in one week. This will be given as,
$1\text{week}=10,080\min $
And one minute is expressed as sixty seconds which is given as,
$1\min =60s$
Therefore one week can be expressed in terms of seconds as the product of the number of minutes in a week and the sixty second. This can be written as,
$1\text{week}=10,080\times 60 = 604,800s$
This shows that the statement given in the question is wrong or false.

Hence the answer is given as option B.

Note:
The answer should be expressed on the basis of its order of magnitude which is written like, $6.04\times {{10}^{5}}s$. This is the scientific way of notation and also the universally accepted one. Order of magnitude is the approximation of the measured value on the basis of a reference value. The reference value can be taken as ten.