Question

1. State whether the following sets are empty, finite or infinite sets. In case of
(non-empty) finite sets, mention the cardinal number.
(i) (all colours of a rainbow
(ii) {x x is a prime number between 7 and 11)
(iii) {x | x is a digit in the numeral 550131527}
(iv) (x | x is a letter in the word 'SUFFICIENT'}
plz do answer fast​

Answer 1

Answer:

Answer:

$p + 4 = 15 \\ \\ subtracting \: 4 \: \: from \: both \: sides \: \: \: we \: get \\ \\ p + 4 - 4 = 15 - 4 \\ \\ p = 11$

Answer:

$\frac{2}{3} of \: 18 \\ \\ \frac{2}{3} \times 18 \\ \\ 2 \times 6 \\ \\ 12$

Answer 2

Answer:

i) finite set and cardinal number is 7.

ii) empty set

iii) finite set and cardinal number is 6.

iv) finite set and cardinal number is 8.

Hope it helps you!!