Iam a number between 60 and 100. my ones digit is 4 less than my tens digit. i am a prime number. what number am i?

73

Step-by-step explanation:

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

in 4 days he will run   12/14

step-by-step explanation: