How many numbers are there between 99 and 1000 having at least one of their digits 7
Answers
Answered by
100
Heya
Your answer is :
Total number of 3 digit numbers having atleast one of their digits as 7 ,
= (Total numbers of three digit numbers) – (Total number of 3 digit numbers in which 7 does not appear at all).
= (9 × 10 × 10) – (8 × 9 × 9)
= 900 – 648 = 252.
Please mark my answer as brainliest if my answer was helpful to you .
Marking my answer as brainliest will help you earn some extra points.
Your answer is :
Total number of 3 digit numbers having atleast one of their digits as 7 ,
= (Total numbers of three digit numbers) – (Total number of 3 digit numbers in which 7 does not appear at all).
= (9 × 10 × 10) – (8 × 9 × 9)
= 900 – 648 = 252.
Please mark my answer as brainliest if my answer was helpful to you .
Marking my answer as brainliest will help you earn some extra points.
Similar questions