If both p and q are false, what is the truth vale of `prarrq`?

The question given below consist of an assertion (A) and a reason ( R). Use the following key to choose the appropriate answer to these questions from the codes (a), (b), ( c) and (d) given below: (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is NOT the correct explanation of A. (c) A is true but R is false. (d) A is false and R is also false. Assertion:A step up transformer can also be used as a step down transformer. Reason:Because (E_s)/(E_p)=(N_s)/(N_p) .

If ‘a’ and ‘b’ are respectively the pth and qth terms of an A.P., show that the sum of (p + q) terms is (p+q)/2[(a + b) + (a- b)/(p - q)] .

p and q are two inegers such that p is the successor of q.Find the value of p-q.

State whether the following statement is true or false. If the statement is false, rewrite the given statement correctly. ) If P = {m, n} and Q = { n, m}, then P xx Q = {(m, n),{n. m)}.

A cubic solid is made of two elements P and Q. Atoms of Q are at the corners of the cube and P at the body-centre. What is the formula of the compund? What are the coordination number of P and Q?

A cube solid is made up of two elements P and Q. Atoms Q are present at the corners of the cubic and atom P at the body centre. What is the formula of the compound ? What are the co-ordination numbers of P and Q ?

If p and q are positive real numbers such that p^2+ q^2=1 , then the maximum value of (p +q) is :

If p and q are the roots of the equation x^2-p x+q=0 , then (a) p=1,\ q=-2 (b) p=1,\ q=0 (c) p=-2,\ q=0 (d) p=-2,\ q=1

True of False : Copper is found both in free as well as in combined state in nature.