How many such '4' are there in the following series, which is immediately preceded by '7' but not immediately followed by '3' ?
987654321742586746123474235674308744
1
2
2
3
3
4
4
5
5
None of these
How many such '4' are there in the following series, which is immediately preceded by '7' but not immediately followed by '3' ?
987654321742586746123474235674308744