Official Quant thread for CAT 2013

MBA CAT 2024
10181
@YouMadFellow said:
CATASTROPHEArrange them in (11!)/(2!2!) ways, but we need only those where AA TT are arranged in a particular way So, (11!/2!2!)/ (4!/2!2!) = 11!/4! ?EDITED
wah kya method hai , isko bolte hain dimag kya khaate hai aap dimag ke liye ?
10182
@amresh_maverick said:
wah kya method hai , isko bolte hain dimag kya khaate hai aap dimag ke liye ?
Kuch nahi :splat: .. Sab PG se hi sikha hai
10183
@YouMadFellow said:
Kuch nahi .. Sab PG se hi sikha hai
wo lalak hai sikhne ki aap mein warna main bhi na sikh leta ?

N = 4^7 × 5^9 + 2^4 × 7 + 3 × 5^3 + 2^6 × 5^8
How many distinct digits are there in the number N?
10184
@amresh_maverick said:
wo lalak hai sikhne ki aap mein warna main bhi na sikh leta ?N = 4^7 × 5^9 + 2^4 × 7 + 3 × 5^3 + 2^6 × 5^8How many distinct digits are there in the number N?
7 it is??

P.S. @YouMadFellow : No spamming 😛 😉 :mg:
@YouMadFellow said:
Kuch nahi .. Sab PG se hi sikha hai
10185
@amresh_maverick said:

N = 4^7 × 5^9 + 2^4 × 7 + 3 × 5^3 + 2^6 × 5^8How many distinct digits are there in the number N?
N = (2^14 * 5^9) + (2^4 * 7) + (3 * 5^3) + (2^6 * 5^8)

N = (10^9 * 2^5) + ( 16*7) + ( 3*125) + (10^6 * 25)
N = (32* 10^9) + (112) + (375) + ( 25*10^6)

N = 10^6 * (32025) + (487)

distinct digits = 3,2,0,5,4,8,7 => 7 distinct digits ?
10186
@YouMadFellow said:
Kuch nahi .. Sab PG se hi sikha hai
Typo ..PG ko sikha rahe hai 😛 :)
10187
@amresh_maverick said:
wo lalak hai sikhne ki aap mein warna main bhi na sikh leta ?N = 4^7 × 5^9 + 2^4 × 7 + 3 × 5^3 + 2^6 × 5^8How many distinct digits are there in the number N?
2^6*5^8(2^8 + 1) + 112 + 375
25000000*(257) + 487
=6425000487

so,7
10188
@rachit_28 said:
Typo ..PG ko sikha rahe hai
Iska reply karne ke liye mujhe ek Question dhundna pada :banghead: ..

Arey, maine hi sikha hai PG se :splat: .. It was a mutual relationship ! :mg:

What comes next in the following sequence ?
1, 4, 5, 6, 7, 9, 11,...
10189
@amresh_maverick said:
wo lalak hai sikhne ki aap mein warna main bhi na sikh leta ?N = 4^7 × 5^9 + 2^4 × 7 + 3 × 5^3 + 2^6 × 5^8How many distinct digits are there in the number N?
7 ?
10190
@YouMadFellow said:
Iska reply karne ke liye mujhe ek Question dhundna pada ..Arey, maine hi sikha hai PG se .. It was a mutual relationship ! What comes next in the following sequence ?1, 4, 5, 6, 7, 9, 11,...
13 ? :P
10191
@sujamait said:
13 ?
Nope 😃 ..
10192
@amresh_maverick said:
wo lalak hai sikhne ki aap mein warna main bhi na sikh leta ?N = 4^7 × 5^9 + 2^4 × 7 + 3 × 5^3 + 2^6 × 5^8How many distinct digits are there in the number N?
all correct , ans =7

If x = _/15 – _/11 , y = _/27 – _/23, z = 2(_/ 6 – _/5), then which of the following is correct?
(a) x > y > z (b) x z > y
10193
@amresh_maverick said:

If x = _/15 – _/11 , y = _/27 – _/23, z = 2(_/ 6 – _/5), then which of the following is correct?(a) x > y > z (b) x z > y
x = (4)/(_/15 + _/11) , y = 4/(_/27 +_/23) , z = 4/(_/24 + _/20)

x > z > y -> Option D ?
10194
@amresh_maverick said:
all correct , ans =7 If x = _/15 – _/11 , y = _/27 – _/23, z = 2(_/ 6 – _/5), then which of the following is correct?(a) x > y > z (b) x z > y
option d?
10195
@YouMadFellow said:
Iska reply karne ke liye mujhe ek Question dhundna pada ..Arey, maine hi sikha hai PG se .. It was a mutual relationship ! What comes next in the following sequence ?1, 4, 5, 6, 7, 9, 11,...

Batao :splat:
10196
@rachit_28 said:
Batao
100 :mg:

The sequence contains numbers where they don't contain the letter 'T' in them 😃 .. It was a bad question, I know :splat:
10197
@YouMadFellow said:
100 The sequence contains numbers where they don't contain the letter 'T' in them .. It was a bad question, I know
Baap re !
10198
@YouMadFellow said:
Iska reply karne ke liye mujhe ek Question dhundna pada ..Arey, maine hi sikha hai PG se .. It was a mutual relationship ! What comes next in the following sequence ?1, 4, 5, 6, 7, 9, 11,...
100 :mg:
nice question 😛 😛
10199

Q: Isosceles triangle ABC has the property that, if D is a point on AC such that BD bisects angle ABC, then triangle ABC and BCD are similar. If BC has length of one unit, then what is the length of AB?

10200
A function F(n) is defined as
F(n – 1) = 1/ [2-F(n)]
for all natural numbers 'n'. If F(1) = 2, then what
is the value of [F(1)] + [F(2)] +…………+ [F(50)]

(Here, [x] is equal to the greatest integer less than or equal to 'x')