While writing all the numbers from 700 to 1000

Asked by admin @ in Math viewed by 296 People

While writing all the numbers from 700 to 1000, how many numbers occur in which the digit at hundred's place is greater than the digit at ten's place, and the digit at ten's place is greater than the digit at unit's place?

Answered by admin @


Answer:

85

Step-by-step explanation:

Given While writing all the numbers from 700 to 1000, how many numbers occur in which the digit at hundred's place is greater than the digit at ten's place, and the digit at ten's place is greater than the digit at unit's place?

Now for the digit at ten's place is greater than the digit at unit's place, total numbers is equal to value of ten's place. For 3 at ten's place numbers can be 30, 31.

In the same way for 5 at ten's place numbers can be 50, 51, 52, 53, 54, 55 (6 numbers)

From 700 to 800, the first number is 7, so we get

6 + 5 + 4 + 3 + 2 + 1 = 21 numbers

From 801 to 900, he first number is 8, so we get

7 + 6 + 5 + 4 + 3 + 2 + 1 = 28 numbers

From 901 to 1000, he first number is 8, so we get

8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 36 numbers

Adding all the numbers we get the total as

21 + 28 + 36 = 85 numbers


Similar Questions

How do you write a mixed number into a decimal

Asked by admin @ in Mathematics viewed by 336 persons

What is the mixed number 4 4/25 as a decimal

How to write a mixed number into an improper fraction

Asked by admin @ in Mathematics viewed by 292 persons

How do you convert mixed numbers into improper fractions and vice versa?

How to write a improper fraction to a mixed number

Asked by admin @ in Mathematics viewed by 341 persons

Three of the following steps are used in writing a mixed number as an improper fraction. Which step does NOT belong? Multiply the denominator of the fractional part by the …

How do you write a fraction as a mixed number

Asked by admin @ in Mathematics viewed by 271 persons

What is the position of E on the number line below? write your answer as a fraction or mixed number,

Write the natural numbers from 2 to 12

Asked by admin @ in Math viewed by 271 persons

Write the natural number from 2 to 12 what fraction of them are prime numbers

The sum of two numbers is 1000

Asked by admin @ in Math viewed by 315 persons

The sum of two numbers is 1000 and the difference between their squares is 25600 then find the numbers

Write all the factors of the following numbers 36

Asked by admin @ in Math viewed by 303 persons

Write all the factors of the following Number 36 23​

Write all the composite numbers between 21 and 50

Asked by admin @ in Math viewed by 339 persons

Write all the composite numbers between 21 and 50

Write 12 less than a number x as an expression

Asked by admin @ in Math viewed by 311 persons

Write 12 less than a number x as an expression

Write the equivalent mixed number 16 10

Asked by maham237 @ in Mathematics viewed by 274 persons

what is 16/10 as a mixed number in simplest form. I don't get it?

How do you write a whole number as a fraction

Asked by admin @ in Mathematics viewed by 324 persons

Explain how to write a whole number as a fraction with a denominator of 1

How to write a improper fraction as a whole number

Asked by admin @ in Mathematics viewed by 319 persons

Three of the following steps are used in writing a mixed number as an improper fraction. Which step does NOT belong? Multiply the denominator of the fractional part by the …

Write the sum of first n natural numbers

Asked by admin @ in Math viewed by 331 persons

Write the sum of first n natural numbers

Write the number names according to indian system

Asked by admin @ in Math viewed by 623 persons

Write number names according to the Indian/International system numeration.(a) 623140140(b) 99999990(c) 64500543(d) 987654321​

Write five rational number greater than - 2

Asked by admin @ in Math viewed by 357 persons

Q.6 ) Write five rational numbers greater than – 2

Most viewed questions in Math

What is the value of x in the expression

Asked by admin @ in Math viewed by 15097 persons

Shubham is facing south and moves 30 km

Asked by admin @ in Math viewed by 12967 persons

Prachi excellence in mathematics class 7 solutions pdf free download

Asked by admin @ in Math viewed by 11988 persons

Survey of various types of bank accounts icse project

Asked by admin @ in Math viewed by 11496 persons

Oxford new enjoying mathematics class 7 solutions chapter 1

Asked by admin @ in Math viewed by 11491 persons

The town of p is located at point x

Asked by admin @ in Math viewed by 11349 persons

A clock gains 4 minutes after every 4 minutes

Asked by admin @ in Math viewed by 10154 persons

Running a tuck shop or canteen maths project pdf

Asked by admin @ in Math viewed by 9363 persons

Paul is sixteenth from the front of the row

Asked by admin @ in Math viewed by 9340 persons

The average weight of 20 teachers is 80 kg

Asked by admin @ in Math viewed by 7507 persons

The number 567 xy is completely divisible by 30

Asked by admin @ in Math viewed by 7389 persons

In a row of friends tiya occupies fifteenth place

Asked by admin @ in Math viewed by 7192 persons

What would $ mean if fat is coded as

Asked by admin @ in Math viewed by 5263 persons

Consider a 3 digit integer x with distinct digits

Asked by admin @ in Math viewed by 4791 persons

Rahul went to his mother's mother in law

Asked by admin @ in Math viewed by 4169 persons