One writes all numbers from 50 to 99 without the digits 2 and 7. How many numbers have been written?
A. 32
B. 36
C. 40
D. 38
Answer:A
One writes all numbers from 50 to 99 without the digits 2 and 7. How many numbers have been written?
A. 32 B. 36 C. 40 D. 38