Twenty, 7, 17, 27, 37, 47, 57, 67, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 87, 97. DONT FORGET, 77 HAS TWO.
There are 20 sevens from 1-100
11 in the 70s
9 in each set of 10 other than 70s
20 is the answer
20
20
20
7,17,27,37,47,57,67,70,71,72,73,74,75,76,77(two sevens),78,79,87,97=20 times
Expressed algebraically, this would equal 7s - 5.
8
5
what is the unit digit of the product if hundred 7"s r multiplied
There is one 7s orbital with two sub-orbitals: 7s(+1/2) and 7s(-1/2) . A picture of this 7s orbital is in 'Related links'
7,17,27,37,47,57,67,70,71,72,73,74,75,76,77(two sevens),78,79,87,97=20 times
Two electrons (each with opposite spins) in the '7s orbital'
Expressed algebraically, this would equal 7s - 5.
8
5
10
6
answer:4
6
what is the unit digit of the product if hundred 7"s r multiplied
If you mean: 4(2s-1) = 7s+12 then the value of s works out as 16