Quiz — Typed parameters

1

Given the function:

sub f(Rat $x) {
    say 2 * $x;
}

Which calls are correct?

0	f(3);	Even if `3` can fit in a `Rat` container, the call is wrong as `3` is `Int`, not a `Rat`.
1	f(3.5);
0	f(3e0);
0	f('3');
1	f(<4/5>);	This is a `Rat` number.

Given the function:

sub g(Int $a, Str $b) {
    say "Integer $a, string $b";
}

Which calls are correct?

0	g(10, 20);
0	g('10', 20);	Even if either argument can be cast, Raku demands the exact type.
1	g(10, '20');
0	g('10, 20');	A single string passed.
0	g('10', '20');