A seven digit number is of the form abcdefg such that a<b<c<d and d>e>f>g . The number of such numbers is:
a)1980 b)1116 c)1476 d)1560
A seven digit number is of the form abcdefg such that a<b<c<d and d>e>f>g . The number of such numbers is:
a)1980 b)1116 c)1476 d)1560