Name: Estimation of Numbers
Uploaded: 2019-07-19
Duration: 6 min 59 s
Description: Estimation is finding a number that is close enough to the right answer. Here, you're not trying to get the exact answer; you need something that is good eno...

Question

The heights (in $metres$ ) of the mountains in Tamil Nadu are as follows:

Order the mountains from highest to the lowest.

Serial Number	Mountains	Height (in $meters$ )
$1$	Doddabetta	$2637$
$2$	Mahendragiri	$1647$
$3$	Anaimudi	$2695$
$4$	Velliangiri	$1778$

Accepted Answer

Let us write the given heights in the place value chart as follows:

Mountains $TH$ $H$ $T$ $O$

Doddabetta $2637$ $6$ $3$ $7$

Mahendragiri $1$ $6$ $4$ $7$

Anaimudi $2$ $6$ $9$ $5$

Velliangiri $1$ $7$ $7$ $8$

All the given heights are $4 -$ digit numbers. Comparing the leftmost digit of the numbers, i.e. digits at the thousand place, we see two numbers have digit $2$ and the other two have digit $1$ . So $2637 & 2695$ are greater than the other two numbers.

Now, from the chart we see that $2695$ has $9$ in tens place whereas $2637$ has $3$ in tens place. So, $2695 > 2637$ .

Again, digits at hundreds place is $6 & 7$ in $metres$ and $1778$ .

Since, $6 < 7 \Rightarrow 1647 < 1778$

So, ordering the mountains from highest to the lowest is : $2695 > 2637 > 1778 > 1647$

Hence, required answer is Anaimudi $2$ Doddabetta $>$ Velliangiri $1647$ Mahendragiri.

Name of the Newspaper	Ranking	Sold (in Lakh)
$A$	$1$	$70$
$B$	$2$	$50$
$C$	$3$	$?$
$D$	$4$	$10$

The heights (in $metres$ ) of the mountains in Tamil Nadu are as follows:

Order the mountains from highest to the lowest.

Serial Number Mountains Height (in $meters$ )

$1$ Doddabetta $2637$

$2$ Mahendragiri $1647$

$3$ Anaimudi $2695$

$4$ Velliangiri $1778$

Important Questions on Numbers

Learn and Prepare for any exam you want !

The heights (in metres) of the mountains in Tamil Nadu are as follows: Order the mountains from highest to the lowest. Serial Number Mountains Height (in meters) 1 Doddabetta 2637 2 Mahendragiri 1647 3 Anaimudi 2695 4 Velliangiri 1778

Important Questions on Numbers

Learn and Prepare for any exam you want !

The heights (in $metres$ ) of the mountains in Tamil Nadu are as follows:

Order the mountains from highest to the lowest.

Serial Number Mountains Height (in $meters$ )

$1$ Doddabetta $2637$

$2$ Mahendragiri $1647$

$3$ Anaimudi $2695$

$4$ Velliangiri $1778$