Question
How many $7$-digit numbers are there in all?
✓
Answer
The largest seven-digit number $= 9999999$
The smallest seven-digit number $= 1000000$
Number of all seven-digits numbers $= (9999999 - 1000000) + 1$
$= 899999 + 1$
$= 9000000$
Hence, there is a total of ninety lakh $7-$digit numbers.
The smallest seven-digit number $= 1000000$
Number of all seven-digits numbers $= (9999999 - 1000000) + 1$
$= 899999 + 1$
$= 9000000$
Hence, there is a total of ninety lakh $7-$digit numbers.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A box contains $5$ strips having $12$ capsules of 500mg medicine in each capsule. Find the total weight in grams of medicine in 32 such boxes.
→Mark two points, $A$ and $B$ on a piece of paper and join them. Measure this length. Draw a line segment $CD$ that is:
Half $AB.$
→Half $AB.$
The length and the breadth of a rectangular park are in the ratio $5 : 3$ and its perimeter is $128m$. Find the area of the park.
→A wire of length $86\ cm$ is bent in the form of a rectangle such that its length is $7\ cm$ more than its breadth. Find the length and the breadth of the rectangle so formed.
→Which number sequence is formed by the number of corners in each shape in the sequence of regular polygons?
Draw a picture and write an addition statement as above to show:
(a) 5 times $\frac{1}{4}$ of a roti
(b) 9 times $\frac{1}{4}$ of a roti
→(a) 5 times $\frac{1}{4}$ of a roti
(b) 9 times $\frac{1}{4}$ of a roti
Determine if the ratio form a proportion. Also, write the middle term and extreme term where the ratio form a proportion:
$200\ ml:$ $2.5$ litre and $₹4 : ₹50.$
→$200\ ml:$ $2.5$ litre and $₹4 : ₹50.$
What must be added to $5 x^3-2 x^2+6 x+7$ to make the sum $x^3+3 x^2-x+1$?
→From Fig, write concurrent lines and their points of concurrence.
Subtract as indicated:$\frac{8}{3}-\frac{5}{9}$
→