Three words will be switching off after one second transition.Also, each word stays on for 1 sec.We need to find out at what time they ALL will be in ON state or end of which second they ALL will be switched OFF for first time. For example, "ABC" switches ON at 2nd sec and gets OFF at 3rd ...

Hello Sir, You can't calculate it because it is part of an infinite series and harmonic which doesn't converge. Harmonic series: The series 1+1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+... is called the Harmonic Series, and it sums to infinity (very slowly). In other words, it diverges. Similar series, like 1/...

This question is out of scope as per GMAT is concerned.
But, if you still need answer, let me know.
I promise that it will take forever to digest it because of huge series of summation gets formed with lot of variables with explanation.

Best Regards

Considering this (a+b+c)^50. By binomial theorem, we know that (a+b)^n has n+1 terms. Now in our case lets consider 'b+c' as B'. Then we have, (a+B')^50 which has 50+1 terms and out of these 50 terms are dependent on B'. So those 50 terms further will be like (b+c), (b+c)^2, (b+c)^3....................

By Venn Diagram we have : (Not.Spanish+Not.German)+German-(German+Spanish)=Not.Spanish You must draw a Venn diagram of Spanish & German speaking diplomats having intersection enclosed in rectangular block which represents total number of diplomats. Then only you may understand the above statemen...

9^-x+9^x=62
=>9^-x+9^x+2-2=62
=>9^-x+9^x+2*9^-x*9^x-2=62
=>(3^-x+3^x)^2-2=62
=>(3^-x+3^x)^2=64

Hence,(3^-x+3^x)=8

Best Regards

Nice one...This is kind of mix of modifier and parallelism as well. At very first look, I narrowed down by choice to A and E and then opted A. Please pay attention to commas, they are acting like a group modifier here. lets have a closer look and go by choices one by one: According to Italy's top an...

First of all, I respect everyone's opinion. I do understand an inevitable ambiguity in this problem. However, option 'E' is the BEST ONE , which really makes sense in given scenario. I differ from Stacey's opinion. Stacey said exactly opposite to what I think, and what I am going to explain as follo...

The sum of the first n terms of a geometric progression is: a(|r^n-1|)/|1 - r| ..................1 for the following type of series Sn = a + ar + ar2 + ... + ar^(n-1)=a(1+r+r^2+r^3 ... +r^(n-1)) We have 2+2+2^2+2^3+2^4+2^5+2^6+2^7+2^7+2^8 =2+2(1+2+2^2+2^3+2^4+.....2^7) =2+2(2^8-1)= 2^9 ---by using 1...

PLEASE MAKE A NOTE: - planning to provide--> Correct (Explains continuous action) planning on providing--> Incorrect (Explains ambiguous/awkward action over action noun) plan on providing--> Correct (Explains an indefinite action/eternally true) plan to providing--> Incorrect (Explains ...

What about Heron's formula? http://en.wikipedia.org/wiki/Heron%27s_formula We know that Area = (s(s-a)(s-b)(s-c))^1/2 = 30..................1 where s= (a+b+c)/2 a= 13 b= 5 c = ? Hence, we will get c by solving quadratic eqn 1. That will make second statement sufficient. Please suggest!

(1) x + 2y = 4 Statement 1: It's insufficient because of 2 variables in one equation. 'x' can't be extracted. So, eliminate A and D. (2) 5x + y + 15 = 3x - 3y + 23 => 5x-3x+y+3y = 23-15 => 2x+4y = 8 => x+2y = 4 (Same as eqn in statement 1) Statement 2: It's insufficient because of 2 variabl...

Is Give X Y an idiom? SC Guide (Chapter 9) states as follows: - RIGHT: The academy gave senior cadets DANCING PRIVILEGES SUSPECT: The academy gave senior cadets THE PRIVILEGES OF DANCING WRONG: The academy gave senior cadets THE PRIVILEGES TO DANCE Experts, please explain! (Is it because give xy an ...

nice explanation!

Hello Stacey, Ron, and friends, I have read lot of your posts and highly appreciate your concern for students taking GMAT. I have taken GMAT twice. GMAT 1: Q(50), V (25) --> 620 in Dec 2010 After that test, I joined 9 session course of Manhattan in Phoenix, AZ. GMAT 2: Q(49), V(25) --> 620 in ...