Six points are marked on a straight line and five points are marked on another line which is parallel to the first line. How many straight lines, including the first two, can be formed with these points?
Correct answer: B. 32
- A. 29
- B. 32
- C. 55
- D. 30
Explanation
Lines joining one point from each parallel line give 6 x 5 = 30 lines. The two original parallel lines add 2 more, so the total is 30 + 2 = 32 lines. The likely trap is 30, which counts only the cross-joining lines and forgets the two given lines.
Last updated
About Sequences and Series
Sequences describe ordered terms formed by a pattern, while series represent the sum of those terms. Questions cover arithmetic and geometric sequences, their nth terms, common difference or ratio, finite sums, and applications, with the sequence itself kept distinct from the corresponding series.
Practise Algebra
269 free Algebra MCQs from Mathematics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Mathematics questions like this
Mathematics is on 67 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.