## Thursday, October 1, 2009

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- Ariel Goldberg
- My name is Ariel Goldberg and I have been a GMAT tutor for eight years. I have taken the GMAT more than twenty times and scored into the 99th percentile; I like to share my GMAT knowledge with everybody. One of the things I like is to write GMAT quant questions that do reflect the changes in the test. The questions sold by some prep services are outdated in that they reflect the GMAT of three or four years ago, before Pearson took over. So that is where I come in, I provide people with good, real-looking GMAT questions.

i think OA D

ReplyDeletefirst 111 prime nos = only 1 even prime (2) + 100 odd primes...

addiing 100 odd nos =>

1st odd + 2nd odd = even + 3rd odd = odd + 4th odd = even

thus on adding

2nd number = e

3rd numer = o

4th number = e

5th number = o....this trend contd....on adding each even numbered digit you get result even....thus....on adding 100th digit we get even result ...then adding odd (2) will result in e+e = e.....hence x is even

hence eqn becomes 1-1+1-1+1 = 1..OA D

Yep, answer is D, good job Bhushan, they key is to see that x is even, as you said, and then you have +1 -1 + 1 -1 +1 = 1

ReplyDelete