- A42
- B54
- C66
- D30
Step-by-Step Solution
Diagonals: . Sides: 12. Excess . (54 is the diagonal count itself.)
Answer: A) 42
By how much does the number of diagonals of a 12-sided polygon exceed its number of sides?
Competition practicePermutations & Combinations
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Permutations & Combinations practice questions
More Permutations & Combinations practice
Ravi has 4 different maths books and 3 different science books. He takes 2 books of…Riya has 4 close friends. She wants to take two or more of them to a movie. How many…Two dice are thrown, one white and one black. In how many outcomes do they show…Rahul invites exactly 4 of his 6 friends to dinner. Two of the friends are twins who…Using the digits 0, 1, 2, 3, 4 and 5, with no digit repeated, how many 3-digit numbers…