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Quantitative Ability Preparation for MBA Entrance

(2204 Posts)

This thread is dedicated to preparation for Quantitative Ability (Quant) section of MBA Entrance like CAT, XAT, MAT, CMAT, SNAP, NMAT, MH-CET & IIFT. You may share questions related to topics like Sets, Quadratic Equations, Functions, Series and Sequences, Geometry and Mensuration, Permutation & Combination, Probability, Number system, LCM/HCF, Ratio & Proportion, Time and Distance, Time and Work, Profit and Loss, Percentages, Simple and Compound Interest etc.

Question should not exceed 100 characters.Use add options for multiple choice questions and "Uploadimage/Add related data" for passage text papers.
Question should be at least 10 characters long.
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Zafir Khan
Posted on 22 Jun, 2017 9:05 PM


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Sankalp Agarwal
Posted on 20 Jun, 2017 12:05 AM

Why the test are 1 question per minute in QA when the CAt gives 2 question per minute is this mock practice for snap XAT NMAt

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Jeya Lakshmi
Shared from Probability Test 5 on 24 Apr, 2017 2:05 PM

A policeman fires four bullets at a dacoit. The probability that the dacoit will be killed by one bullet is 0.6. What is the probability that the dacoit is still alive?

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Posted on 11 Jul, 2017 11:04 PM


Shared from CAT Mock Test - 16 on 19 Mar, 2017 3:00 AM

During World War II, the allied forces attacked Germany. For the final assault, they had to cross a bridge. To fend off the attack, the Germans wanted to destroy the bridge, but not completely.

The Germans had 4 missiles with them and the firing conditions were as follows:

I.    Probability for the first missile to hit the target was 1/3. The probabilities of subsequent missiles to hit the target were 2/3, 3/4 and 4/5, respectively.

II.   Each missile had a limited destroying capability of 20%, 50%, 80% and 30%, respectively.

III.  Only two missiles hit the target on firing.

What is the probability of the Germans saving at least 30% of the bridge?

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Posted on 29 Mar, 2017 5:52 PM

As the Germans have to save at least 30% of the bridge, they can destroy at most 70% of it. Also, as 2 missiles have to hit the target, these conditions will be only obtained in the following 2 cases:
rnCase 1: Missiles 1 and 2 hit but 3 and 4 dont
rnThe probability of this happening is 1/3 x 2/3 x 1/4 x 1/5 = 1/90
rnCase 2: Missiles 1 and 4 hit their mark and 2 and 3 dont
rnThe probability of this happening is 1/3 x 1/3 x 1/4 x 4/5 = 1/45
rnThus, the total probability = 1/90 + 1/45 = 1/30
rnHence, answer option 4 is correct.