Official Quant thread for CAT 2013

How many 3 letter words can be formed with 2 A's, 3 B's, 4 C's and 5 D's..??
Please tell Approach 😃

help m sort out ths one

n this one as well

puys plz share some links or pdf for cat level quant...
😐

Find the number of real solutions of the equation |x^2-3x-18|=2x-3 .

a) 0

b) 1

c) 2

d) 3


I am getting the answer as 1 but its given to be 2. Please check it.

If six identical dice are thrown simultaneously , what is the total number of distinct outcomes that are possible ?

A b c are three guys...73 chocolates are to be distributed among them.how many ways one can distribute such that c gets more than b and b gets more than a.


Q.17 Six men and two boys working together can complete a piece of work in 9/4 days. If the number of days taken by 5 boys to complete the same work is 4 more than that taken by 3 men, then the efficiency of a boy is what percent that of a man?


plz explain.....

total number of integer solutions of the equation : xy= x +y +15 ?


what is the remainder when 2^7 - 4^7 + 6^7 - 8^7 +10^7 -12^&7 is divided by 7?

please solve and explain the question given in attachment.

Ram and his wife Sita are planning to invite 6 of their siblings for dinner. Ram has 4 sisters and 3 brothers while Sita has 3 sisters and 4 brothers. In how many ways can they invite 3 women and 3 men so as to include 3 of Ram's siblings and 3 of Sita's siblings?

Find the sum of an infinite number of terms of the series given below.

1+2+(11/9)+(16/27)+(21/81)..........

a )4.5

b)5.25

c)6.00

d)4.66


If 150! is converted to base 7, how many consecutive zeros would be there at the end of it?
(aswer is 24)...i need to understand the approach..(as to y v r finding the highest power of 7 in 150??)


since last 1 hour no question...has everyone gone to see the match 😃

for how many natural no. less than 10^5 is the sum of their digits equal to 10?

1381 1001 996 252

the function f(x)=|x-1|+|2.8-x|+|x-3|,where x is a real number can attain a minimum value of??

ans:x=2

plz provide approach

A salt solution containing 6% salt and rest water, is mixed with water. One third of the quantity of the solution so obtained is drained out and replaced by glucose solution having 10% glucose and rest water. If water now accounts for 94% of the total solution, what is the ratio of salt and glucose in the final solution?

A, B, C and D are four towns any three of which are non-collinear. Then the number of ways to construct three roads each joining a pair of towns so that the roads do not form a triangle is

Consider obtuse angled triangles with sides 7 cm, 13 cm and 'a' cm. If 'a' is an integer, then how many such triangles are possible?

approach plz