Question

find the mean of 10 two digit number
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Answer 1

Answer:

4

Step-by-step explanation:

According to question,

Total increase = 3.6 × 10 = 36

∴ If the number be 10p + q, then

Number obtained after reversing the digits = 10q + p

∴ 10q + p – 10p – q = 36

⇒ 9q – 9p = 36

⇒ 9 (q – p) = 36

⇒ q – p = 36 ÷ 9 = 4

Answer 2

Answer:

10+20/2=15

Step-by-step explanation:

so, 15 is the mean...