GATE 2014 EC (EC3) – Question 4

General Aptitude · Quantitative Aptitude: Arithmetic and Number Computation · 1 mark · Numerical answer

Find the next term: 81,54,36,24,…

Practise this question in The GATE Grind →

Show answer and explanation

Correct answer: 16 to 16

Explanation

Each term is multiplied by2/3:81×2/3=54,54×2/3=36 and36×2/3=24. Applying the same factor gives24×2/3=**16**. The decreasing differences27,18,12also follow the same geometric ratio.