Question

HCF of a 2 digit number y and 40 is 1 howamy such 2 digit numbers y are there​

Answer 1

Answer:

36

Step-by-step explanation:

last digit of y should not be divisible by 2 and 5

so for first digit there are 9 possibility and for second 4

out of ten digit(0,2,4,5,6,8,)