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How to solve maths

I want to sell  my CAT test series. Is is totally new. Not a single test is taken. It has 25 mocks and 30 sectional tests. Any one interested can contact/whatsapp me on 9742251550. Price is 1350(Negotiable). 

I want to sell my CAT test series. It is totally new. Not a single test is taken. It has 25 mocks with 30 sectional tests. Please contact / whatsapp me on 9742251550. Price is 1350(Negotiable)

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How much time should i give to each section in IBPS PO Pre? I am good in all the three sections.

I have a crack u exam mocks but did not open it shows subscribe to gain access

who was the first president of india

Syllogism doubts

What are the things to be taken care of to increase my present percentile 89.4 to 99+

There are 8 speakers A,B,C,D,E,F,G and H in a conference. A,B and C always speak in alphabetical order. The probability that A,B and C are the first 3 speakers is a/b, where 'a' and 'b' are co-prime, find a+b.
This is one among the qstns I found in your video series for probability. I really didn't understand how the total no of outcomes became (8!/6), why can't we take A,B,C as one unit and consider the total no of outcomes to be 6! ?

In eliminating two closer options,i'm facing a severe difficulty in Reading comprehension. i always end up with negative one.in rare case,i'm going for right.how can i approach to this problem ?