Which vegetable was absent in India before the arrival of European explorers?

Which of the following is an incorrect pair regarding Bentham and Hooker's classification of Polypetalae?

$A$ random variable $X$ has the following probability distribution:

$X = x$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$
$P(X = x)$	$0.15$	$0.23$	$K$	$0.10$	$0.20$	$0.08$	$0.07$	$0.05$

For the event $E = \{X \mid X \text{ is a prime number}\}$ and the event $F = \{X \mid X < 4\}$, the probability $P(E \cup F) = $

Which pair of oxyacids of phosphorus contains $P-H$ bonds?

Kepler's second law (law of areas) is nothing but a statement of

Suppose there is a hole in a copper plate. On heating the plate,the diameter of the hole would: