Advertisements
Advertisements
प्रश्न
Observe the patterns of digits made from line segments of equal length. You will find such segmented digits on the display of electronic watches or calculators.
If the number of digits formed is taken to be n, the number of segments required to form n digits is given by the algebraic expression appearing on the right of each pattern.
How many segments are required to form 5, 10, 100 digits of the kind −
Advertisements
उत्तर
It is given that the number of segments required to form n digits of the kind -
is (5n + 2).
Number of segments required to form 5 digits = (5 × 5 + 2)
= 25 + 2 = 27
Number of segments required to form 10 digits = (5 × 10 + 2)
= 50 + 2 = 52
Number of segments required to form 100 digits = (5 × 100 + 2)
= 500 + 2 = 502
संबंधित प्रश्न
Write down the following in the product form: 9xy2z
If 11 is subtracted from 4 times a number, the result is 89. Find the number.
Find a number which when multiplied by 5 is increased by 80.
When Raju multiplies a certain number by 17 and adds 4 to the product, he gets 225. Find that number.
Find two numbers such that one of them exceeds the other by 18 and their sum is 92.
The sum of two consecutive even numbers is 74. Find the numbers.
The sum of three consecutive odd numbers is 21. Find the numbers.
Reena is 6 years older than her brother Ajay. If the sum of their ages is 28 years, what are their present ages?
A man is thrice as old as his son. Five years ago the man was four times as old as his son. Find their present ages.
If m is a whole number, then 2 m denotes a multiple of 2.
The additive inverse of an integer x is 2x.
The side of an equilateral triangle is shown by l. Express the perimeter of the equilateral triangle using l.
A cube is a three-dimensional figure as shown in the given figure. It has six faces and all of them are identical squares. The length of an edge of the cube is given by l. Find the formula for the total length of the edges of a cube.
The expression for the number of diagonals that we can make from one vertex of a n sided polygon is ______.
The sum of first n natural numbers is given by `1/2n^2 + 1/2n`. Find the sum of first 11 natural numbers.
The sum of squares of first n natural numbers is given by `1/6n(n + 1)(2n + 1)` or `1/6(2n^3 + 3n^2 + n)`. Find the sum of squares of the first 10 natural numbers.
The sum of the multiplication table of natural number ‘n’ is given by 55 × n. Find the sum of table of 7.
If 
= 2x + 3, 
= `3/2x + 7` and 
= x – 3 then find the value of:
2
+ 
– 
If 
= `3/4x - 2` and 
= x + 6, then find the value of:
2
– `3/2`
