Official Quant thread for CAT 2013

MBA CAT 2024
25228
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@maroof10 koi to iska solution post karo tabse without any shortcut count kar rhi hun....

25230
@pratyush9811 i think it will be 10PM ///
25231
@albiesriram said:
C. 3
25232
@ankittripathi said:
C. 3
OA D. 4 ( 0,10,16,18 viz)
25233
Q: in how many ways a cricketer can complete 300 runs exactly with only 6s and 4s?
25234
@viewpt said:
Q: in how many ways a cricketer can complete 300 runs exactly with only 6s and 4s?
14?
25235
@viewpt said:
Q: in how many ways a cricketer can complete 300 runs exactly with only 6s and 4s?
26?

6s 4s
====
50 0
48 3
. .
. .
0 75

25236
@viewpt said:
Q: in how many ways a cricketer can complete 300 runs exactly with only 6s and 4s?
26?
25237
@viewpt said:
Q: in how many ways a cricketer can complete 300 runs exactly with only 6s and 4s?
26..
25238
@viewpt said:
Q: in how many ways a cricketer can complete 300 runs exactly with only 6s and 4s?
26?
25239
@viewpt said:
Q: in how many ways a cricketer can complete 300 runs exactly with only 6s and 4s?
6x+4y = 300
=>3x+2y = 150
=>x = 50 - 2y/3
since x is non-negative integer hence y must be a multiple of 3, also (2y/3) cannot be greater than 50, otherwise x becomes -ve.
=> y can take any value which is multiple of 3 and
hence 0,1,....75 are 26 possible values.
ATDH.
25240
@Abir1103 is the answer 26??
25241
@ankittripathi total no of solutions for 6a + 4b=300...
25242
@jai.tuteja said:
@ankittripathi total no of solutions for 6a + 4b=300...
No. of possible solutions, neglecting negative solutions is 26
25243
@9040 I do not know any shortcut aswell
25244
@ankittripathi yup.... correct..!!!

please share the shortcut formula.. I mean the PnC shortcut method.....
25245

find the sum of the first 20 terms of the series 2*3,4*6,6*9,8*12.....

25246

The total number of integral solutions for (x,y,z) such that xyz=24,is

25247
@pavimai said:
find the sum of the first 20 terms of the series 2*3,4*6,6*9,8*12.....
17220?