Question 166

A mobile number consists of ten digits. First, four digits are 9,9,7 and 9. Make the smallest mobile number by using only one digit twice from 8,3,5,6,0.

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Solution

Given, the total number of digits =10

and first four digits of the mobile number = 9,9,7,9 Also, given digits= 8,3,5,6,0

Now, to make the smallest mobile numbers, we will use the smallest digit twice, i.e. 0 and the rest in ascending order.

Required mobile number = 9979003568

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Question 165
A mobile number consists of ten digits. The first four digits of the number are 9,9,8 and 7. The last three digits are 3,5 and 5. The remaining digits are distinct and make the mobile number which is the greatest possible number. What are these digits?

A Mobile number consists of ten digits. The first four digits of the numbers are 9,9,8 and 7 . The last three digits are 3,5 and 5. The remaining digits are distinct and make the mobile number, the greatest possible number. What are these digits?

Q. Now make the greatest and the smallest 4-digit numbers by using any one digit twice, from the following digits.

3,8,7

Q. Match the conditions on the left side with the appropriate numbers on the right side.

a.) Largest 4-digit number using any four different digits with digit 5 always at the tens place	i.)1032
b.) Largest 4-digit number formed from the digits 5, 0, and 7 by using any one digit twice	ii.)3399
c.) Smallest 4-digit number using any four different digits with digit 2 always at the ones place	iii.)7750
d.) Smallest 4-digit number formed using the digits 3 and 9 equal number of times	iv.)9857

Q. Mobile Money Identification Number (MMID) is a ___ digit number of which of four digits are the unique identification number of the bank offering Immediate Payment Service (IMPS)

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Standard IX Mathematics

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Question 166 A mobile number consists of ten digits. First, four digits are 9,9,7 and 9. Make the smallest mobile number by using only one digit twice from 8,3,5,6,0.

Given, the total number of digits =10 and first four digits of the mobile number = 9,9,7,9 Also, given digits= 8,3,5,6,0 Now, to make the smallest mobile numbers, we will use the smallest digit twice, i.e. 0 and the rest in ascending order. Required mobile number = 9979003568

Question 166

A mobile number consists of ten digits. First, four digits are 9,9,7 and 9. Make the smallest mobile number by using only one digit twice from 8,3,5,6,0.

Given, the total number of digits =10

and first four digits of the mobile number = 9,9,7,9 Also, given digits= 8,3,5,6,0

Now, to make the smallest mobile numbers, we will use the smallest digit twice, i.e. 0 and the rest in ascending order.

Required mobile number = 9979003568