alleryHow many two-digit numbers are divisible by 3 (i.e. the AP 12, 15, …, 99)?
A30
B29
C31
D33
Answer & Solution
Correct answer: A. 30
AP 12,15,…,99: aₙ=12+(n−1)3=99 ⇒ n=30.
Keep practising Arithmetic Progression
Browse all Arithmetic Progression questions for Andhra Pradesh SSC (Class 10), or explore more Mathematics topics.
Related questions
CLASS10 · Mathematics · Arithmetic ProgressionSum of the first n terms of an AP is:The nth term of an AP with first term a and common difference d is:The centroid of a triangle with vertices A(1, 1), B(4, 7), C(7, 1) is:Find the point dividing the segment joining (4, −1) and (−2, −3) in the ratio 1 : 3.The midpoint of segment AB is (4, 5). If A = (2, 3), what is B?Find the point P that divides the segment joining A(1, 2) and B(7, 8) in the ratio 1 : 2.Find the midpoint of A(2, −3) and B(8, 5).