Which of the following cannot be solved using nPr? permutations of the letters of the word "OF"
permutations of the letters of the word "PERMUTATION"
permutations of the letters of the word "THINGS"
permutations of the letters of the word "N"

permutations of the letters of the word "PERMUTATION"

Step-by-step explanation:

Thats cause the word has two t's and some permutations are going to be the same, you have to substract some to get the actual answer.

isi

step-by-step explanation:

use that smart brain

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)