# Posts by tej

Total # Posts: 3

**Maths**

The sum of the digits of a two digit number is 13.The number obtained by interchanging the digits of the given number exceeds that number by 27.Find the number.

**Physics**

3.335 4.444666666666666666

**maths**

Derivative of √ tan x is, Answer: A. sin 2 x/ √ tan x B. cos 2 x/ 2 √ tan x C. sec 2 x D. None of these

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