How many numbers between 50 and 150 have at least one digit that is 2
Answers
52,62,72,82,92,102,112,120,121,122,123,124,125,126,127,128,129,132,142.......
......plz plz mark as brilliant and follow me.....
Answer:
The total numbers between 50 and 100, which have at least one digit is 2 = 19
Step-by-step explanation:
To find,
The numbers between 50 and 100, which have at least one digit is 2,
Solution:
First, let us consider the two-digit numbers. That is the numbers from 50 to 99
The numbers with '2' in unit place = 5
The numbers with '2' in tens place = 0
Total number of two-digit numbers between 50 and 99 with at least one digit is 2 = 5
Again consider the three-digit numbers, that is the numbers from 100 to 150
The numbers with 2 in unit place = 5
The numbers with 2 in tens place = 10
The numbers with 2 in hundreds place = 0
The numbers with 2 in both unit and tens place = 1
Total number of three-digit numbers from 100 and 150 with at least one digit is 2 = 10+5 -1 = 14
∴ The total numbers between 50 and 100, which have at least one digit is 2 = 14+5 = 19
#SPJ2