The best questions to practice for CAT Exam are the actual CAT Question Papers. 2IIM offers you exactly that, in a student friendly format to take value from this. If you would like to take the same inside a testing engine (for Free) head out here: CAT Official Question Mocks. In CAT 2018 we saw some beautiful questions that laid emphasis on Learning ideas from basics and being able to comprehend more than remembering gazillion formulae and shortcuts. Original CAT Question paper is the best place to start off your CAT prep practice. This page provides exactly that. To check out about 1000 CAT Level questions with detailed video solutions for free, go here: CAT Question Bank
Question 27 :If log2(5 + log3a) = 3 and log5(4a + 12 + log2b) = 3, then a + b is equal to
We know that if logqp = r then p = qr
Given log2(5 + log3a) = 3
5 + log3a = 23
log3a = 3
a = 33 = 27
Similarly, 4a + 12 + log2b = 53
4a + log2b = 113
log2b = 5
b = 25 = 32
a + b = 27 + 32 = 59
The question is "If log2(5 + log3a) = 3 and log5(4a + 12 + log2b) = 3, then a + b is equal to"
Choice B is the correct answer.
CAT® (Common Admission Test) is a registered trademark of the Indian Institutes of Management. This website is not endorsed or approved by IIMs.
2IIM Online CAT Coaching
A Fermat Education Initiative,
58/16, Indira Gandhi Street,
Kaveri Rangan Nagar, Saligramam, Chennai 600 093