CAT Quantitative Aptitude Questions 2017- PaGaLGuY

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Question 15any approach...

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Vishu Pai @vishiac  ·  3w

@Rahulbrd046 x*(x+1/3)= 4*2... x= 8/3.... So time taken by q= 2+8/3= 4hr 40min.... So 4:40pm

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Solution to questions 14,15 please.

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solution please

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Vishu Pai @vishiac  ·  3w

@Abhikr2211 (10-6)/(10+6)= 1/4... So 1/4*200= 50

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Some apples are divided among four people karan, kiran, kumar, khanna. the ratio of apples given to kiran to the total no of apples given to karan and khanna is 1:2 . The ratio of no of apples given to kumar to that of remaining apples is 2:5. Kha...
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Abhinavlvs
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A hare and Jackal are running a race. 5 leaps of the Hare is equal to the 4 leaps of jackal. For every 6 leaps of hare the jackal takes 5 leaps  . find ratio of thier speeds ?


Abhinavlvs
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Abhinav lvs @Abhinavlvs18  ·  3w

@akashmohan Thank you !

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Vishu Pai @vishiac  ·  3w

@Abhinavlvs18 6*4:5*5= 24:25

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Any approach

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Vishu Pai @vishiac  ·  3w

@Abhikr2211 actual time 3 (3/11)hr..... 3hr 18min 15s=3 (73/240)...... Time diff= 73/240-3/11= 83/(240*11) hr= 83/44min..... In 24hrs, (83/44)*24*(11/36)= 83/6min= 13min 50s lost

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Any Approach?

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@jaskaran97  @jaskaran97  ·  3w

x/x-8 = x-12/x-18  , X=48  

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@Abhikr2211 @Abhikr2211  ·  3w

@jaskaran can u explain in detail?

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Approach?

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Vishu Pai @vishiac  ·  3w

@girish95 Width of river corresponds to 3 and distance covered corresponds to 5, when u draw a rightangled triangle in the direction of speeds.... so 5/3 = 1 (2/3)

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Anyone soln ?

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Sahil Gaur @sahilgaur094  ·  3w

Basically we have to calculate 1(1!)+2(2!)+3(3!)...+100(100!), in next step write this as (2-1)1!+(3-1)2!+(4-1)3!....+(101-1)100! and open the barcket and cut terms, you'll be left with -1!+101!.  

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Vishu Pai @vishiac  ·  3w

@div3708 (n+1)! -1 = 101!-1

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 abcd=2018
Find the total number of integral solutions 

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Vishu Pai @vishiac  ·  3w

@Bulbuul two positive solns without interchanging... With interchanging, 4+2*4c2= 16solns... With negative included...many more.. Which is the case??

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Bulbuul Dev @Bulbuul  ·  3w

@vishiac true again we need to calculate negative integral solutions ,where any two or all four are negative
96+16=112
total solutions=16+112=128 

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