- A79.5
- B71.5
- C73
- D86
Step-by-Step Solution
m. There are 11 gaps before the 12th streetlight, not 12 (which would give 86); 71.5 leaves out the first streetlight's own 8 m from the crossing, and 73 counts only 10 gaps.
Answer: A) 79.5
Streetlights are fixed in a straight line along a new road. The first streetlight stands 8 m from the crossing, and each next one is 6.5 m further along than the one before it.
How far from the crossing is the 12th streetlight, in metres?
Class 10nth Term of an APAlgebra — Sequences
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All nth Term of an AP practice questions
More Class 10 nth Term of an AP practice
Find the 21st term of the AP: 3.4, 3.1, 2.8, 2.5, ...Which term of the AP 6, 6.5, 7, 7.5, ... is equal to 20?An AP has a positive first term and a negative common difference. Which statement about…Vikram writes the first term of an AP with first term a and common difference d as a +…An AP has common difference 3, and its 15th term is 5 more than twice its 5th term. Find…