Bodhee Prep-CAT Online Preparation

CAT 2018 [SLOT 1] Quant Question with Solution 27

Question:
If f(x + 2) = f(x) + f(x + 1) for all positive integers x, and f(11) = 91, f(15) = 617, then f(10) equals

Show Answer
Correct Answer: 54
f(x+2) = f(x) + f(x+1)
f(11) = 91
Let f(12) = a
f(13) = 91 + a
f(14) = 91 + 2a
f(15) = 182 + 3a.
This is also equal to 617.
182 + 3a = 617 => a = 145
f(10) = f(12) - f(11) = 145 - 91 = 54

CAT Online Course
Also Check: 841+ CAT Quant Questions with Solutions

CAT 2018 Slot-1


CAT 2018 Slot-2


CAT Quant Questions with Video Solutions

30 must do CAT Quant Questions with Video Solutions

CAT 2023
Classroom Course

We are starting classroom course for CAT 2023 in Gurugram from the month of December.
Please fill the form to book your seat for FREE Demo Classes

CAT 2023 Classroom Course starts in Gurgaon