Add 2 to me. Then multiply by 5 and subtract 10 and divide now by 4 and I will give you 15! Who am I?

Mean of 10 observations is 50 and their standard deviation is 10 If each observation is subtracted by 5 and then divided by 4, then the new mean and standard deviation are

If (4+sqrt(15))^n=I+f,w h r en is an odd natural number, I is an integer and 0

Find the remainder when 1!+2!+3!+4!++n ! is divided by 15, if ngeq5.

Find the quotient and the remainder when 5x^(5) -13x^(4) -15x^(2) -20 is divided by x-3

A tree says" I can live without you, But you cannot live without me". Is the statement true? Give reasons on the basis of ecosystem.

Add the following polynomials and find the degree of the resultant polynomial. (i) p(x) = 6x^(2) - 7x+2" " q(x) = 6x^(3) - 7x+15