CAT Quantitative Aptitude | Quant Questions 2017- PaGaLGuY

Please explain.

How to solve the first question..

 In a circular track, there are two points P and Q which are diametrically opposite.C starts running clockwise with a speed of 4m/s from P. At the same time, from Q, A starts running clockwise with a speed of 3 m/s and B starts running anti clockwise with a speed of 5 m/s. If the length of the track is 300m, then after how much time will C be equidistant from A and B for the first time. 

Question number 9. Anybody? Should the answer be cannot be determined? Or else can we find the distance with the available data?

Approach pls

A teacher wrote number 1 to 63 in a black board in their binary form. Find the total no of one's that are there on the board. Ans. 192 Approach!?

Approach??

How to solve this one..

How to solve this one..

When does nmat release their result? I gave it on 8th october. Result isnt declared till date. What is the expected date for the result ?

Plz explain simple approach to solve this

A group of students were given the names of eight countries and their capitals, in two columns. Each student is expected to match the eight countries with their respective capitals. A student is awarded 3 marks for each correct match. What is the maximum possible number of students who give different sets of valid responses and end up getting 15 marks?

How do we solve this question ? Any explanation


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Puys anyway to conceptually solve this without forming equations?? In a set of prime and composite numbers, the composite numbers are twice the number of prime numbers and the average of all the numbers of the set is 9. If the numbers of prime numbers and composite numbers are exchanged, then the average of the set of numbers is increased by 2. If during the exchange of the numbers, the average of the prime numbers and composite numbers individually remained constant, then the ratio of the average of composite numbers to the average of prime numbers (initially) was ?

A page is torn from a novel. The sum of the remaining page numbers is 10000. What is the sum of the two page-numbers on the torn page of this novel?

Need explanation

Question 9, please.

Q16.

Q 43 ans is D but what really time they require to meet again?

4,a,b,c,d,1024 are in GP 

find b


answer and approach