Question

how many odd number less than 1000 can be formed by using the digits 0 2 5 7 when the repetition of digits is allowed

Answer 1

Answer:

That leaves us with two choices for the tens digit since we cannot use the hundreds digit or the units digit. Hence, the number of three-digit odd numbers that can be formed using only the digits 0,3,5,7 is 2⋅2⋅3.

Answer 2

Answer:32

Step-by-step explanation:

odd numbers less than 1000

3 digit no.=3*4*2=24

2 digit no.=2*3=6

1 digit no.=2

so total odd no. less than 1000 =24+6+2=32

ans 32