Official Quant thread for CAT 2013

MBA CAT 2024
26248
@KhannaiiM said:
what is the value of the series 1/4 + 1/8 + 2/16 + 3/32 + 4/64... upto infinty?
2S = 1/2 + 1/4 + 2/8 + 3/16 + 4/32 + ......
-S = - 1/4 - 1/8 - 2/16 - 3/32 - ......
-------------------------------------------------------
S = 1/2 + (1/8 + 1/16 + 1/32 + .....)
1/2 + 1/4 = 3/4 ?
26249
@albiesriram said:
1 option d

2 option d ?
26250
@iLoveTorres said:
iska answer 9 hai kya? question is vague
ans is 9...pata nahi mujhe kuch smamjh me nahi aaya.
26251
@KhannaiiM said:
what is the value of the series 1/4 + 1/8 + 2/16 + 3/32 + 4/64... upto infinty?
3/4 ?
26252
@albiesriram said:
1)None of the these

2)CBD
26253
@KhannaiiM said:
OA is 0.75
ok ok.. fine my mistake its 3/4 multiplying both sides by common ratio and solve..
26254
@KhannaiiM said:
what is the value of the series 1/4 + 1/8 + 2/16 + 3/32 + 4/64... upto infinty?
7/12?
26255
@iLoveTorres said:
iska answer 9 hai kya? question is vague
12 possible hai na? 6 * 2 = 3 * 4 satisfies...

regards
scrabbler
26256
@scrabbler said:
12 possible hai na? 6 * 2 = 3 * 4 satisfies...regardsscrabbler
mujhe jo samajh mein aaya was
See from the given statement she gets 2 sweets less per rupee so by saving 3 rupees she would get 6 sweets. But 6 sweets costs Now if you consider the options 12, see how many 3 rupee blocks you can make(pardon me for my usage of words)=12/3=4 so she would be getting atleast 4*6=24 sweets. But maximum is 20.
Likewise check for other options only 9 satisfies 😃
26257
@KhannaiiM said:
what is the value of the series 1/4 + 1/8 + 2/16 + 3/32 + 4/64... upto infinty?
Answer: 3/4
26258
@iLoveTorres said:
mujhe jo samajh mein aaya was See from the given statement she gets 2 sweets less per rupee so by saving 3 rupees she would get 6 sweets. But 6 sweets costs Now if you consider the options 12, see how many 3 rupee blocks you can make(pardon me for my usage of words)=12/3=4 so she would be getting atleast 4*6=24 sweets. But maximum is 20.Likewise check for other options only 9 satisfies
Ok I interpreted like this - if she buys 12 sweets at 4 per rupee, she spend 3 rupees. But if she buys the same number of sweets at 2 per rupee, she spends 6 rupees.

regards
scrabbler
26259
@vbhvgupta said:
Q5
d)38.4
26260

A person calculate his % profit on cp and another on SP.what will be their diff in profit if both claims a profit of 20% on goods sold for rs 3000.


26261
@iLoveTorres said:
d)38.4
explain?
26262
@scrabbler said:
Ok I interpreted like this - if she buys 12 sweets at 4 per rupee, she spend 3 rupees. But if she buys the same number of sweets at 2 per rupee, she spends 6 rupees.regardsscrabbler
your assumption mein mujhe ek hi chota sa doubt laga
see if she buys 4 sweets per rupee so for 20 sweets she would have spent 5 rs. this is 3 more than what her uncle charges which is 20 sweets for 2 rupees. he is not giving 2 sweets less for a rupee na..
26263
@vbhvgupta said:
explain?
Q=(24-x)/24*100
62.5*Q=|x-24|/24*100 (loss is also a positive quantity and hence i have took a modulus)
Solving this you would get the CP as rs 15
Q=(9/15)*100=60%
Now when the CP is 24 and you need 60% profit so 24*1.6= 38.4rs
26264
@vbhvgupta said:
A person calculate his % profit on cp and another on SP.what will be their diff in profit if both claims a profit of 20% on goods sold for rs 3000.
rs 100
26265
@vbhvgupta said:
A person calculate his % profit on cp and another on SP.what will be their diff in profit if both claims a profit of 20% on goods sold for rs 3000.
100?
26266
@rnishant231 said:
100?
explain?
26267
@iLoveTorres said:
your assumption mein mujhe ek hi chota sa doubt lagasee if she buys 4 sweets per rupee so for 20 sweets she would have spent 5 rs. this is 3 more than what her uncle charges which is 20 sweets for 2 rupees. he is not giving 2 sweets less for a rupee na..
Up to 20 she is allowed, need not be exactly 20.

Bhai dekh na....the question is asking how many sweets did she buy....if she is buying 20 sweets exactly then the question is a waste?

regards
scrabbler