Answer:
Step-by-step explanation
(2/3) (60/99) = (2/99)(60/3) = (2/99)(20) = 40/99 = .040404......... So.......the sum of the first 15 digits = 7(4) + 7(0) + 0 = 28.
Answer:
A 7 and 5 differences are 4 and -2
b) 4, K
c)-2
d) no depends on K
I have no answer for the second part yet
Step-by-step explanation:
Answer:
I think it is 68cm
Step-by-step explanation:
Given:
In a two-digit number, the tens digit is 5 less than the units digit.
The number itself is five more than three times the sum of its digits.
To find:
The number.
Solution:
Let the two digit number is ab. So,

Tens digit is 5 less than the units digit.
...(i)
The number itself is five more than three times the sum of its digits.



...(ii)
Using (i) and (ii), we get





Putting b=8 in (i), we get


Therefore, the required number is 38.