MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Number Properties (Language)

Q. If we writ...

Question

Q. If we write all the whole numbers from 200 to 400, then how many of these contain the digit 7 once and only once?

A

32

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

34

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

35

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

36

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D 36
Number of numbers that contain 7 in units place only once = 18
Number of numbers that contain 7 in ten’s place only once = 18
Total sum of digits containing 7 only once = 18 + 18 = 36

Suggest Corrections

thumbs-up

8

Similar questions

Q. Write some equivalent fractions which contain all digits from 1 to 9 once only.

Q. How many different four-digit numbers can be written using each of the digits

1, 2, 3, 4, 5, 6, 7

8

only once so that each number should contain a unity?

Q. Write all 3-digit numbers using 2, 3, 4, taking each digit only once.

Q. How many numbers consisting of

5

digits can be formed in which the digits

3, 4

7

are used only once and the digit

5

Q. How many four-digit odd numbers can be formed using the digits

0, 2, 3, 5, 6, 8

(each digit occurs only once)?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Number Properties (Language)

Standard VII Mathematics

Join BYJU'S Learning Program

CrossIcon