Maths / Arithmetic Progression / Sum of First n Terms

QUESTION

The sum of 1st and the last term of an AP of 150 terms is equal to the sum of which of the following two terms?

 OPTIONS A. 15th and 135th B. 20th and 131th C. 50th and 51th D. 90th and 60th
Right Option : B

EXPLANATION
Explain TypeExplanation Content
Text

In a seies of 150 terms,

$a_1+a_1_5_0=a_2+a+a_1_4_9=a_3+a_1_4_8=--------$

So,$a_2_0+a_1_3_1=a_1+a_1_5_0$

View Contents
(Concept based Learning and Testing for [6th - 10th], NTSE, Bank & Govt. Exams)
Self Learning
Testimonials
STUDENT FEEDBACK - Arpit Aggarwal C/o ABHYAS Academy
10th
My experience with Abhyas was spectacular and amazing. I came to know NTSE and its importance. I came to know about competitive exams.

#### Other Testimonials

Courses We Offer
(Concept based Learning and Testing for [6th - 10th], NTSE, Bank & Govt. Exams)