How many numbers from `1` to `100` written in decimal form have the digit 5 in them?

How many number from 1 and 100 written in the decimal form have the digit 5 in them? (i) 11 (ii) 10 (iil) 15 (iv)20

How many number from 1 and 100 written in the decimal form have the digit 5 in them? (i) 11 (ii) 10 (iii) 15 (iv) 20

(i) How many three - digit numbers are there, with no digit repeated ? (ii) How many four - digit numbers are there, with no digit repeated ? (iii) How many natural numbers from 1 to 1000 have none of their digits repeated ?

How many numbers of four digits can be formed with the digits 1,2,4,5,7 no digit being repeated?

How many numbers of four digits can be formed with the digits 1,2,4,5,7 no digit being repeated?

How many numbers of six digits can be formed from the digits 0,1,3,5,7 and 9 when no digit is repeated? How many of them are divisible by 10?

How many numbers of six digits can be formed from the digits 0,1,3,5,7 and 9 when no digit is repeated? How many of them are divisible by 10?

How many numbers lying between 100 and 1000 can be formed with the digits 1,2,3,4,5 if the repetition of digits is not allowed?