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お忙しいところ恐れ入ります。
どなたか下記Math問題ご教授いただけませんでしょうか。
1. There are two scales; scale X and scale Y. 6 degrees on scale X correspond to 30 degrees on scale Y. 24 degrees on scale X correspond to 60 degrees on scale Y.
If the scale Y shows 100 degrees, what is the number of corresponding degrees on scale X?
2. For all positive integers n, if K is the sequence such that n-th term in K is n-digit positive integer where digits are all equal to 2, what is the tens digit of sum of the first 30 terms of K?
A)0
B)2
C)4
D)6
E)8
よろしくお願い致します。
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