Write down the values of `(barX+X)` and `(X.barX)` in Boolean algebra.

Write down the value of (bar(X)+X) and (X.bar(X)) in Boolean algebra.

Write down one use of x-ray.

What is the value of 1 + 1 according to Boolean algebra?

Write down the range of wavelength of X-rays.

A functionfis defined by f(x)=2x-5. Write down the values of (i) f(0), (ii) f(7), (iii) f(-3)

Write down four important uses of X-rays.

Write down three important properties of X -rays.

If P(x)=0.65,P(Y)=0.15,then the value of P(barX)+P(barY) is

Write down the binominal expansion of , (x/3 + 2/t)^(4)

If the mean and variance of one set of values be barx_1 and s_1^2 and those of another set be barx_2 and s_2^2 respectively and each set has values 2, then prove that the variance (s^2) of the combined set of values is given by 4s^2 = 2(s_1^2 + s_2^2) + d^2 where d = (barx_1 - barx_2) .