Official Quant thread for CAT 2013


tn=1/(root(n)+root(n-1)), then t2+t3+.....+t81 = ?

Approach plz

A sum amounts to 60000 in 5 years at 20% p.a compound interest,interest being compounded continously.find the sum.(round off your answer to the nearest thousand e=2.718)specify the approach.

rightmost non-zero digit of 37! ?

Does anyone has the "Manhattan Quant ebook"..If anyone have then plz mail it to me at punit_beriwal@outlook.com..

Thanks in advance....😁

A group of 4 married couples want to play mixed tennis, but each married individual does not want to be on the same team as his/her spouse. How many possible games can be played between two teams?

A does one- fifth of a work in a week. b finishes the same in a fortnight . B starts the work and works only for 3 dyas , thereafter A completes the work. He'll finish the job in how many days???

A manufacturer produces two types of products- A and B, which are subjected to two types of operations, viz. grinding and polishing. Each unit of product A takes 2 hours of grinding and 3 hours of polishing whereas product B takes 3 hours of grinding and 2 hours of polishing. The manufacturer has 10 grinders and 15 polishers. Each grinder operates for 12 hours/day and each polisher 10 hours/day. The profit margin per unit of A and B are Rs. 5/- and Rs. 7/- respectively. If the manufacturer utilises all his resources for producing these two types of items, what is the maximumprofit that the manufacturer can earn?

(a) Rs.280/-

(b) Rs.294/-

(c) Rs.515/-

(d) Rs.550/-

(e) None of the abov e please explain the method guys!

one of the two natural numbers A and B,

one of the two natural numbers C and D and

one of the two natural numbers E and F are

multiplied together. The sum of all such product is equal to 105. How many distinct values are poss for A ?

6 4 12 7

There are five bells which start ringing together at intervals of 3, 6 , 9 , 12 , 15 seconds respectively. in 36 mins how many times will the bells ring simultaneoulsy??

  • 6
  • 13
  • 12
  • 5

0 voters


Question No. 30

Question: Simhapuri Express departs from Hyderabad at 3 am on Friday for Chennai. Charminar Express left Hyderabad at 4 am on the same day for Chennai. Charminar Express overtakes Simhapuri exactly at a distance of 200 km from Hyderabad at 8 am on Friday. After reaching Chennai, Charminar Express halts there for 1 hour and returned to Hyderabad. At a distance, which is 100 km from Chennai, it meets the Simhapuri Express, which is still on the way to Chennai. Assume, in return journey also, the average speed is the same and there is no stop in between Hyderabad and Chennai.At what time did Charminar reach Hyderabad?

Answer 1: 9 am on Saturday

Answer 2: 8 am on Sunday

Answer 3: 8 pm on Sunday

Answer 4: 9 am on Sunday

what is the number of distinct terms in the expansion of (a+b+c)^20 ?cat

Health insurance Plan A requires the insured to pay $1000 or 50% of total cost, whichever is lower. Plan B requires the insured to pay the initial $300, but then pays 80% of the cost over $300. Which of the following is a cost level for which both insurance plans pay out the same amount?

a) $600 b) $1000 c) $3800 d) $5300 e) $6200

Directions: Two friends A and B start simultaneously from two points P and Q which are 100 m apart. After they reach Q and P again they return to P and Q respectively. They keep on walking in between P and Q with out stopping anywhere. The ratio of their speeds (A and B) is 3 : 2.What is the distance travelled by B, by the time, when both A and B meet for the 8th time?

600 m

400 m

200 m

800 m

320 m

Three circles each of units radius intersect each other at P,Q and R.P,Q & R are the centre of the three circles. what is the sum of length of the arcs PQ,QR & PR?

  • 3pi
  • 4pi
  • pi
  • non of these

0 voters

A line L passing through the point (1,1) & (2,0) meets y axis at A. A line through the point(1/2,0) and perpendicular to L meets Y axis at B and L at C. Find area of the triangle ABC

  • 16/9
  • 40/23
  • 25/16
  • 32/19

0 voters

Among the seven shirts – blue, green, red, black, white, pink and orange, Sam wears a different coloured shirt on a different day of a week starting from Thursday. If he wears a blue shirt on Thursday, what is the probability that he wears a red shirt on Friday?

Attached - Cat 500 by Ims

A train crosses a platform of length 500 m in 50 sec and another train of same length moving in opposite direction with doubles the velocity in 20 sec. What is the length of the train?

450 m

700 m

750 m

925 m

1000 m

A train crosses a platform of length 500 m in 50 sec and another train of same length moving in opposite direction with doubles the velocity in 20 sec. What is the length of the train?

450 m

700 m

750 m

925 m

1000 m